A college is trying to attract more commuting students from the local community. The table below shows the distances (in miles) of randomly selected 30 students. Assume that the population standard deviation is 3 miles. Construct the confidence interval for the population mean. with the confidence level of 95%. Answer in three decimal places. 14   10  14   12   12   11   5   6   9   14   9   9   4   7   15   9   7   7   12   10   15   10    6   11   9   11   10   11   7   12

Q: In a survey of3313 adults aged 57 through 85​ years, it was found that 88.6​% of them used at least…

A: Given that  n = 3313 , p = 88.6% = 0.886 , q = 1 - p = 1 - 0.886 = 0.114

Q: 3. Suppose that a population equation is given by Y = XB + Zy+ u. Instead you estimated the…

A: Given that, The population equation is given by, Y=Xβ+Zγ+u Y=Xb+e Eu|X,Z=0 is assumed.

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: given data normal distributionμ = 139σ = 25.6P(130<x<181) = ?

Q: In the Chernobyl nuclear accident it is estimated that 30,000 people received an average dose of 45…

A: Total 30000 people  Average Dose of 45 REM    ** According to Muller  45 REM is standard dose ( it…

Q: 26. Packaging Error Because of a mistake in packaging, a case of 12 bottles of red wine contained…

A:

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 17 for the population…

A: given data 95% confidence interval margin of eeror(E) = 4σ = 17n = ?

Q: If n=24, (x-bar)=44, and s=18, construct a confidence interval at a 98% confidence level. Assume the…

A: given data,n=24x¯=44s=18CI=98normal distribution we have to find out the confidence interval for…

Q: Variable (a) Exchange on which a stock is traded (NYSE, AMEX, or other) (b) Anxiety rating (highly…

A: It is given that the statement about to the quantitative and categorical ( qualitative ) variable.

Q: There is not sufficient evidence to support the claim that the standard deviation of pulse rates of…

A: It is given that  Significance level, α = 0.01 P-value = 0.3876

Q: Calculating Percent Change Determine the Percent Change for each of the following. Express your…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted.....…

Q: Assume that females have pulse rates that are normally distributed with a mean of μ=73.0 beats per…

A: GIVEN DATA  normal distributionμ = 73σ = 12.5p(x<80) = ?

Q: A sample of 50 luxury hotels in the Northeast had an average room rate of $325 per night and a…

A: Introduction: It is required to identify the correct interpretations of the 95% confidence interval.

Q: ● Question 1 Fill out the table below: 1 2 3 4 5 SUM I Submit Question 1 5 7 9 10 The regression…

A: According to the given information in this question We need to find the regression equation

Q: 2. Having done poorly on their Math finals in June, eight students repeat thecourse in summer school…

A: Given that a ... Set up the appropriate Ho and Ha.   b... Propose a formula to calculate the test…

Q: 7.7 Use a computer program to compute the probability that a t distribution with 36 df exceeds 2.5.

A: The degrees of freedom is, df = 36.

Q: Briefly define each of the following: a. Distribution of sample means b. Central limit theorem c.…

A: Here we have to define the following a. Distribution of sample means b. Central limit theorem c.…

Q: Construct a frequency distribution for the data. Solution: Class Total Tally Frequency Relative…

A: Given that  36 customer were categorized according to Civil status

Q: A magazine collected the ratings for food, decor, service and the cost per person for a sample of…

A: The given model is Y^i=-25.002+1.0004Xi.

Q: a) Write down the appropriate probability distribution with its parameters. b) What is the…

A: It is given that the 2% of the packages mailed through this company do not arrive at their…

Q: A coin is tossed 4 times and the sequence of heads and tails is recorded. Use the generalized…

A: given  data  coin is tossed 4 times.  we record sequence of heads and tails.  so there are 2…

Q: According to a leasing firm's reports, the mean number of miles driven annually in its leased cars…

A: We have given that:  Sample size (n) = 44 , Mean = 12330, Hypothesised Mean = 12880 , Standard…

Q: You are asked to select a password that consists of 5 characters. Each of the characters can be any…

A: It is given that a password consists of 5 characters, each characters can be any of the capital…

Q: On their website, a property management company states that the mean monthly rent for apartments on…

A: Claim: the mean monthly rent on the east side, μ is less than $700. Hypotheses: H0: μ=700H1:…

Q: Before every flight, the pilot must verify that the total weight of the load is less than the…

A: given data normal distributionμ = 179σ = 37.2n = 36over load if x¯>162P(overload) = ?

Q: Professional tennis player Novak Djokovic hits the ball extremely hard. His first-serve speeds can…

A: M=Mean=112, sd=standard deviations=5

Q: B) Imagine now, that we want to reexamine the data we collected in the last HW and find out if there…

A: As per our guidelines I can solve only first 3 subparts. Kindly post the remaining subparts again…

Q: 2. The joint probability function of two discrete random variables X and Y is given by ² + y²…

A:

Q: Fast

A:

Q: 4. A washing machine in a laundromat breaks down an average of three times per month. a) Find the…

A:

Q: For the proprablility distribution table below: P(x) 0.17 0 1 2 3 4 0.06 0.18 0.25 0.34 Find the…

A: Given information: x P(x) x*P(x) 0 0.17 0 1 0.06 0.06 2 0.18 0.36 3 0.25 0.75 4 0.34…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 10 for the population…

A:

Q: A sample of 80 households was randomly selected from the home owners in Columbia, Missouri, and an…

A: a) It is needed to test the null hypothesis that whether there is no association between the cities…

Q: 4. A fast-food chain has many hundreds of franchises nationwide. Ideally, each franchise would…

A:

Q: A sample of 22 households uses an average of 346.2 gallons of water per day, with a sample standard…

A: The sample size is 22, sample mean is 346.2 and sample standard deviation is 50.5.

Q: Write the integer that represents the situation. The temperature was 24°F. It dropped so that the…

A: Given Upper =24°F and lower=0°F

Q: The lifetime of an Acme heat pump has an Exponential distribution with a mean of 12 years. Suppose…

A: As per our guidelines we are suppose to answer only three subparts kindlyrepost the remaining…

Q: 4. Two continuous random variables X and Y has joint density function given by 3x +9y 784 1<x<5,…

A:

Q: Suppose you wish to compare the characteristics of tuberculosis meningitis in patients infected with…

A: a)No, Two underlying populations do not have equal variances. as their difference of standard…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 24 for the population…

A:

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: given data  normal distribution μ = 100σ = 15P(x&lt;z) = 0.99x =?

Q: 7.5.5. Let X be a random variable with the pdf of a regular case of the exponential class, given by…

A: Given the random variable X with the pdf of a regular case of the exponential class,…

Q: The lifetime of a certain brand of electric light bulb is known to have a standard deviation of 46…

A: Given that  Sample size n =90 Sample mean=489 Population standard deviation =46

Q: A food safety guideline is that the mercury in fish should be below 1 part per million​ (ppm).…

A: Solution-: Given data: 0.54, 0.78, 0.09, 0.94, 1.29, 0.58, 0.92 What is the confidence interval…

Q: You invest $200 000 in a project.  Your returns are as follows: Year        Annual Net Cash…

A:

Q: A survey of 9 retirees was taken. Among other things, the retirees were asked to report the age at…

A: The given ages are 55, 74, 66, 66, 74, 66, 67, 57, 74.

Q: The results of a national survey showed that on average, adults sleep 7.3 hours per night. Suppose…

A: Given that  Mean = M = 7.3 , Standard deviation = SD = 2

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: given data  normal distribution μ = 100σ = 15P(x&gt;z) = 0.75x =?

Q: 14 men and 13 women chose "Drama". Construct a two-way frequency table for the data. Choose one v…

A: It is given that each of 50 moviegoers was asked, “ What is your favourite movie type ?”

Q: The following data lists the ages of a random selection of actresses when they won an award in the…

A: a. Hypotheses: H0 : μd=0H1 : μd&lt;0

Q: How would you then interpret this question based on the findings?

A: The average graduate student takes 12 psychology courses as an undergraduate. μ =12 Dr. Jekyll…