with p.d.f. : The diameter of an electric cable, say X, is assumed to be a continuous random variable f (x) = 6x (1-x), 0 ≤ x ≤ 1. and (ii) Determine a number b such that P (X < b) = P (X> b). (i) Check that f(x) is p.d.f.,

Q: Interpret the value of IQR in the above table.

A: Using the given table, The value of interquartile range (IQR) is 3692. Now, We know that the IQR…

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A:

Q: For a population with a standard deviation of population = 14, a score of X= 24 corresponds to…

A: Given,population standard deviation(σ)=14a score(X)=24and Z-score=-0.50

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A: Given Information: Confidence level is 99% Margin of error E=0.06

Q: The degrees of freedom for a contingency table with 6 rows and 4 columns is 6 15 10 18

A: Answer: From the given data, For a contingency table, number of rows (r) = 6 Number of columns (c) =…

Q: The standard error of the mean (Qx) is a(n)

A:

Q: Microsoft Outlook is believed to be the most widely used e-mail manager. A Microsoft executive…

A: It is given that the sample size, i.e., the no. of sampled users n=300. Of the 300 sampled users,…

Q: 4. In a class of preschool children, 12 said their favorite color is red, 8 said their favorit is…

A: Preschool children Color Frequency Red 12 Blue 8 Green 10 Yellow 20 Pink 5

Q: An automobile manufacturer introduces a new model that averages 26 miles per gallon in the city. A…

A: Given: μ = 26 σ = 2 Formula Used: Z-score = X-μσ X = μ+Zσ

Q: 3. The stem-and-leaf display below shows the exam scores for a class of students. Stem-and-leaf of…

A: 3) In the stem-and-leaf plot, the stem indicates the tenth and the leaf indicates the unit place of…

Q: 4. What is the critical value? 4. What is your decision regarding Ho? Reject Ho or don't reject Ho?

A: It is given that Test is that whether the variance of nicotine content is less than 0.0644 Sample…

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A:

Q: (1) Find Cov(X, Y) (2) Find p(X, Y)

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Q: e categorical data or frequency bar graph?

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Q: Jate E=t 2 S₁ 1 — n₁ + 22 2 31 for t = -1.14, s₁=0.96, $₂=0.69, ₁ (Round to two decimal places as…

A: Given that  t*=-1.14s1=0.96s2=0.69n1=29n2=38

Q: A sample of size n=92 is drawn from a normal population whose standard deviation is a = 7.6. The…

A: given data n = 92 σ = 7.6x = 44.16

Q: If the sample mean is 8, the hypothesized population mean is 4, and the population standard…

A: The hypothesized population mean is 4, the sample mean is 8 and the population standard deviation is…

Q: A cellphone provider has the business objective of wanting to estimate the proportion of subscribers…

A: Given,sample size(n)=500no.of subscribers would upgrade to a new cellphone at a reduced cost…

Q: 75 3 • Σ₁₁₂ (X₂-3×₁) 4. 13 2 Σ... (X, Y.² +2Z.)

A:

Q: Suppose that you and a friend are playing cards and you decide to make a friendly wager. The bet is…

A:

Q: To assess the effectiveness of a cola video ad for cola B, a random sample of 35 individuals from a…

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Q: 3. The stem-and-leaf display below shows the exam scores for a class of students. Stem-and-leaf of…

A: Given information: Stem  Leaf 2 4 3   4   5 5 6 1247 7 123469 8 2357 9 23

Q: In 2017, Americans spent record-high $9.1 billion on Halloween-related purchases (the balance…

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Q: Leisure Time Exercise Only 21% of a country's adults get enough leisure time exercise to achieve…

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Q: The dotplot shows how many times a computer was used daily at a public library during a 30-day…

A: given data number of observations n = 30we had given dotplot.

Q: Given the following data, solve using the regression equation analysis. What is the value of a ?…

A: Given that    X Y X \cdot YX⋅Y X^2X2 Y^2Y2   3 4 12 9 16   5 3 15 25 9   1 15 15 1 225…

Q: 2. To have a better understanding of her students, a lecturer gives out a questionnaire at the…

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

Q: epresent the lifet: olt internally fro: rood liG.

A: Quantile-quantile plots, often known as Q-Q plots, are frequently used to determine whether or not a…

Q: time at each sample size in the table. 10. Record the sample mean and sample standard deviation in…

A: Given the following table of sample size, sample mean and sample standard deviation : Sample size…

Q: A fast food restaurant executive wishes to know how many fast food meals teenagers eat each week.…

A: Given that  Sample size n =566 Sample mean =5.8 Population standard deviation =1.4

Q: 9. The data shown below reflects the age of a man and a woman at the time of their wedding. The…

A: Given that  Let x denotes the man's age and y denotes the women's age  Linear regression line…

Q: The table shows the weekly income of 20 randomly selected full-time students. If the student did not…

A: Data given 565,521,569,189,592,250,222,504,0,206,3356,443,0,277,194,227,114,0,0,505

Q: 6. You conducted a census. Explain why descriptive statistics are helpful but inferential statistics…

A: By definition, the census is explained as the complete enumeration (i.e., the study in which each…

Q: ndom variable X follows a normal distribution with mean value zero and standard deviation Find E{X}.

A:

Q: Consider three classes (I, II and III) consisting of 30, 25, and 45 students. Suppose a student is…

A: Given information: There are 3 classes: I, II and III consists of 30, 25 and 45 students…

Q: neck here for instructional material to complete this problem. valuate E = t* 2 S 'P n + 2 Р 31- for…

A: Given,t*=0.36sp=45.60n1=47n2=48

Q: Motorola used the normal distribution to determine the probability of defects and the number of…

A: Given that Population mean =10   If  standard deviation=0.10   The process standard deviation is…

Q: Evaluate F = 2r 22 $2 for s₁ = 5.91 and s₂ = 5.48.

A: Given formula: F=s12s22

Q: John runs a computer software store. Yesterday he counted 132 people who walked by the store, 69 of…

A: GivenNo.of people who walked by the store=132No.of people came into the store=69No.of people bought…

Q: a) How many days was the number of daily logins 20 or less logins? b) The library does not want…

A: It is given that the dot plot shows how many times a computer was used daily at a public library…

Q: Graduate School Yes No Total Select one: Sellors resulted in the following crosstabulation regarding…

A: graduate  school business engineering others total yes 35 42 63 140 no 91 104 65 260 total 126…

Q: Check here for instructional material to comple 2 Evaluate F = for s₁ = 5.94 and s2 = 5.46. 2 S $2

A: Given,s1=5.94s2=5.46we know, F=s12s22

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A: Given statements: p: It is a frog q: It has fur

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Q: Tom's commuting time from his residence in Carmel to the IUPUI campus has a normal distribution.…

A: The question is about normal distribution Given : Std. deviation of the commute time ( σ ) = 8…

Q: A recent report by the American Medical Association stated the average annual salary of…

A: given data claim : μ &gt; 189121σ = 26975n = 64x¯ = 198630p value = ?