Test stastitic for two tailed test of a large smaple means test where the SD of of the population was Z=-2.05. What's the p-value of this two tailed test?

Q: Let x = age in years of a rural Quebec woman at the time of her marriage. ne year 1941, the…

A: (a). Find the level of significance: Level of significance: Level of significance is the probability…

Q: mean score for the most recent applicants is lower than 70. He randomly samples the scores of 10…

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Q: We wish to test if a new feed increases the mean weight gain compared to an old feed. At the…

A: We have to interpret p value.

Q: Test invitory for a company,PTS  was given to a sample of 25 joggers. The results showed: mean…

A: We have given that  Sample size n= 25  Sample mean = 10.46  Standard deviation s= 5.55 Level of…

Q: A sample mean of 22298, sample standard deviation of 14200, and sample size of 17, Ho μ=30000, H1:…

A: As per our guidelines we are supposed to answer only one question per post so i am solving first…

Q: According to National Institue of​ Health, college students consume an average of 1.7 alcoholic…

A: Given that,population mean(u)=1.7sample mean, x =2.3standard deviation, s =0.65number (n)=100

Q: IMPORTANT: Use the five steps in the hypothesis testing procedure for each answer. The CEO of a…

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Q: actual number of people who had noticed. a. In a similar study using a sample of n = 9 partici-…

A: We have to perform the hypothesis test for testing the mean.

Q: Past experience indicates that the time required for high school seniors to complete a standardized…

A: Solution: Given information: n= 20 Sample size  σ=6 Population standard deviations s=4.51 Sample…

Q: 3. A study claims that all adults spend an average of 14 hours or more on chores during a weekend. A…

A: Given: n=200, x=14.65 and σ=3

Q: 16 independent normal observations were collected from a population i mean u and known variance o? =…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: A researcher wants to test whether children who play a musical instrument perform better in school…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A special academic program for skilled students conduct an admission exam to select their new…

A: Given  Mean score=66 Sample size=n=18 Sample mean=X_bar=62 Sample standard deviation=s=8.7 Level of…

Q: ntegrion on the mobile phone company claims that its phone will last for more than 8 hours of…

A: Given information Hypothesized mean µ = 8 Sample size (n) = 18 Mean x̅  = 8.2 Standard deviation (s)…

Q: The average score on a statistics test was 2.42 with a standard deviation of 0.81. The teacher…

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Q: The basketball teams calculate the number of points scored by all athletes in every game. Suppose…

A: Correct answer:-  significant different from the usual amount - False

Q: A sample of n=16 individuals is selected from a population with a mean (µ)= 80 and standard…

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Q: Type of test H, 2 df Ho In Illinois, a random sample of 85 eighth grade students has a mean score of…

A: Given: n = 85 df = n-1 = 84 α = 0.04 α2 = 0.02 μo = 260 Formula Used: t = X-μSn

Q: (a) Identify the rejection region. At ? = 0.05, an lower-tailed test would reject H0 if z ≤…

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Q: Past experience indicates that the time required for high school seniors to complete a standardized…

A:

Q: Use a hypothesis test to test the given claim. A large software company gives job applicants a test…

A: From the provided information, Sample size (n) = 25 Sample mean (x̅) = 165 Sample standard deviation…

Q: You are conducting a study to see if the probability of catching the flu this year is significantly…

A: Given that, You are conducting a study to see if the probability of catching the flu this year is…

Q: ds the data for the Analysis of Variance (ANOVA). If she reported the test statisti .1 "hat is the…

A: Given For the given scenario of ANOVA We have Number of groups=k=5

Q: Number 13

A: It is given that M is 6.4, SS is 162, n is 9 and level of significance is 0.05.a)The test hypotheses…

Q: The standard error of the mean difference between male and female drivers (i.e., the se) is .50.…

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Q: Women athletes at a university have a long term graduation rate ef 67%. Over the past several years,…

A: To testH0:p=67%=0.67H1:p≠0.67

Q: 20. A researcher reports a between subjects ANOVA, F(3, 40) = 2.96. State the decision to retain or…

A: 20.  At 5% level of significance we reject the null hypothesis for this test     21.  Yes, test…

Q: Scores on an IQ test are normally distributed.  A sample of 25 IQ scores had standard deviation s=…

A: The question is about confidence interval Given : Sample size of IQ scores ( n ) = 25 Sample std.…

Q: Researchers measured the weight(g) of 25 randomly selected bubblefish from a population living in an…

A: μ=83x¯=85, s=4, n=25

Q: A forensic psychologist is interested in testing whether serial killers are more introverted than…

A: The hypothesized mean is 36.

Q: sample of n = 20 children diagnosed with the disorder and measures each child's attention span…

A: Given that, Sample size n=20 Mean increase of attention span MD=4.8 Standard deviation of difference…

Q: Suppose that you want to perform a hypothesis test for a population mean. Assume that the population…

A: For testing population mean: If sample size is small and the population is normally distributed…

Q: A 2. The mean weight from a sample of 256 computer parts created by a computer manufacturer was…

A: Our null hypothesis(H0) is the mean weight of computer parts is less than  275 grams so the…

Q: . A study claims that all adults spend an average of 14 hours or more on chores during a weekend. A…

A: Given μ=14, n=200, x̄=14.45, σ=3 Hypothesis  Ho: μ=14  H1: μ>14  Note: According to Bartleby an…

Q: Q#5: A random sample of 40 measurements from one population had a sample mean of 11, with sample…

A: Given Data : For Sample 1 x̄1 = 11.0 s1 = 4.0 n1 = 40 For Sample 2…

Q: After performing a t-test assuming equal variances using the data analysis add-in for MS Excel, what…

A: Given, Sample ID Control (x1) Nitrogen Treatment (x2) 1 0.331 0.419 2 0.375 0.727 3 0.385…

Q: Scores on an IQ test are normally distributed. A sample of 18 IQ scores had standard deviation s =…

A: Confidence interval: The (1-α) % confidence interval for population variance is given by:

Q: QUESTION AL A leading E-commerce company conducts a study to observe the weekend sales per customer…

A: Given : A leading E-commerce company observed by conducting a study that the weekend sales per…

Q: Data were collected from 400 patients in the US about their estrogen level.  Out of the 400, 35…

A: Test whether the population proportion of patients with abnormal estrogen levels is equal to 0.08 or…

Q: 2. An experimental study was conducted by a researcher to determine if a new time slot has an effect…

A: INTRODUCTION:  small sample test for a population mean  let x1, x2, . . . . . xn be a random sample…

Q: A researcher is testing a hypothesis of a single mean. The critical z value for α = .05 in a…

A: Given  Zcrititcal=1.96 and Zstat=-1.85

Q: significantly better than the rest of the freshmen class? Use a ONE-tailed test with alpha of .05.…

A: 6. Null Hypothesis: H0: μ=74 Alternative Hypothesis: H1:μ>74 Test statistic: t=M-μsn =79.4-741836…

Q: Q1. Using 625 trading days of data, you estimated the daily log return follows a normal distribution…

A: Computing the 90% confidence interval for the mean return estimate:Here, the sample size is 625. The…

Q: A researcher was interested in the effect of exercise on stress levels. For the general population,…

A: 1. Null hypothesis: H0: μ = 25. Alternative hypothesis: H1: μ ≠25. 2. Critical value: The level of…

Q: Chi-square Test for a Variance or Standard Deviation: Scores on an IQ test are normally…

A: From the provided information, Sample size (n) = 24 Sample standard deviation (s) = 23 Population…

Q: 3.03, find the p-value to 4 decimal You are performing a two-tailed test with test statistic z =…

A: solution two tail z= - 3.03 P(z < - 3.03 ) = 0.0012  ( using z table

Q: A lumber company is making boards that are 2900 millimeters tall. If the boards are too long they…

A: Given,sample size(n)=35sample meanx¯=2900.3standard deviation(σ)=8α=0.01

Q: A psychologist has developed a standardized test or measuring vocabulary skill for 4 year old…

A: Given : n=25 , X-bar=77  , σ=20 , μ0=70 , α=0.05 Since , the population standard deviation (σ) is…

Q: A special academic program for skilled students conduct an admission exam to select their new…

A: