65% of all Americans live in cities with population greater than 100,000 people. If 46 Americans are randomly selected, find the probability that a. Exactly 29 of them live in cities with population greater than 100,000 people. 0.1182 b. At most 31 of them live in cities with population greater than 100,000 people. 0.4946 c. At least 28 of them live in cities with population greater than 100,000 people. 0.7709 d. Between 28 and 36 (including 28 and 36) of them live in cities with population greater than 100,000

Q: QUESTION ONE A. Consider the following sample with 20 observations: 1 1 5 7 9 11 TT 20 28 88 11 (i)…

A:

Q: A survey revealed the amount of pocket money held by each student in a sample o students from…

A: The number of observations is 16.

Q: Refer to the data set of birth weights​ (grams) of the 44 babies given in the accompanying table and…

A: The question is about measure of central tendency Given :   To find : a ) Mean b ) Median

Q: A long-distance phone company wishes to estimate the mean duration of long-distance calls…

A: Data given n=15 Data: 5,5,2,5,5,17,21,29,31,13,1,19,12,2,37

Q: The scores on an examination in biology are approximately normally distributed with mean 500 and an…

A:

Q: Summary statistics are given below for independent simple random samples from two populations. Use…

A: The given values are x¯1=71.8,s1=3.9,n1=11,x¯2=68.6,s2=3.6,n2=9.

Q: Example 12.5 Two samples of sizes 40 and 50, respectively, are taken from a population with unknown…

A: Given that  We  have to find the best estimate to μ and σ2

Q: Based upon the output provided, what is sample size?

A: Given information : Correlation Matrix for the variables Travel and Satisfaction is given.

Q: Refer to the data set of birth weights​ (grams) of the 44 babies given in the accompanying table and…

A:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given that  Margin of error = E = 3.5% = 0.035 80% confident  Level of significance = 100% - 80% =…

Q: Which of the following are assumptions underlying repeated-measures ANOVA? Check all that apply.…

A: There are three assumptions in repeated measures ANOVA. 1. Independence: Each observation should be…

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A:

Q: A university offers supplemental instruction (SI) for introductory chemistry students three times a…

A: Let x=# of SI visits and y=final class average.

Q: Confidence Intervals: Generate the specified confidence interval. Karen wants to advertise how many…

A: Given that the sample size is n= 100  Sample mean is x̄= 12.9  standard deviation is s= 3.4…

Q: E3 discuss and compare the results of descriptive statistics for the stock returns of Ha Do group…

A: Let's first describe the center of the data : for HA DO GROUP : In these results, the mean stock…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A:

Q: The following are ages of 20 of the signers of the Declaration of Independence. 60 , 39, 45, 38,…

A:

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

A:

Q: The mayor is interested in finding a 90% confidence interval for the mean number of pounds of trash…

A:

Q: Suppose you wish to determine the degree to which annual earnings of professional golfers (Earnings)…

A: In the above question, the annual earnings of professional golfers (Earnings) is dependent variable…

Q: Answer this following questions relate to an outbreak of diarrheal disease among nursing home…

A: Given the table containing characteristics of residents of Nursing home A during an outbreak of…

Q: Is P(x < 7) equal to P(x ≤ 7)? Why?

A: P(X&lt;7) does not include the term P(X=7) but P(x ≤ 7) includes the term P(X=7).

Q: A light bulb manufacturer advertises that the average life for its light bulbs is 900 hours. a…

A: From the provided information, Sample size (n) = 15 Level of significance (α) = 0.10

Q: (i) Calculate the probability that a randomly chosen policy holder from this portfolio will make a…

A: Let us define some events A : a policy holder is from group A. B : a policy holder is from group B.…

Q: What is a semi-structural interview?

A: Note: As per the guidelines, we are allowed to answer first question when multiple questions are…

Q: Suppose i) the moment generating function technique to find the probability distribution Write down…

A:

Q: Do students reduce study time in classes where they achieve a higher midterm score? In a Journal of…

A: (a) The objective is to set up the null and alternative hypotheses to test whether there is a…

Q: Problem #5

A: Anova is used to compare three or more groups when each groups are independent. Repeated anova used…

Q: Let Zi X₁μx~N(0,1), and Wi = ~N(0,1), for i = 1,2,3,...,10, then: i) State, with parameter(s), the…

A:

Q: The number of cans of soft drinks sold in a machine each week is recorded below. Develop forecasts…

A: Given data for the sale of cans of softdrinks We have to calculate Mean squared error and Mean…

Q: Identify the lower class limits, upper class limits, class width, class midpoints, and class…

A: The frequency distribution shows the blood platelet count of females.

Q: Just Solve first 3 parts!

A: Graphs are used for visual understanding. It helps to understand the data easily. Each graph has…

Q: Find: Wald test Likelihood ratio test Score test Z- test p-value test chi-square test odds ratio…

A: Note: As per the guidelines, in case of multiple subparts, answer to at least three subparts must be…

Q: Show that 2"=nCk and 0 = [(-1)^nck k=0 HINT: Consider(1-1)" and (1+1)" k=0

A:

Q: The accompanying table provides theoretical data on marital status and income bracket for a random…

A: The data shows the marital status and income bracket for a random sample of adults age between 20…

Q: What is the standard deviation of 32, 21, 17, 38 and 6.

A:

Q: C. An insurance company has a portfolio of 10,000 policies. Based on past data, the company…

A: The total number of policies is n= 10000. Probability, p= 0.003 Let X represents the number of claim…

Q: Suppose that a sequence of mutually independent and identically distributed discrete random…

A: Given X~Pois(θ) Mean=variance=θ  X1,X2,..Xn be the independent V(X1+X2+..+Xn)=V(X1)+V(X2)+..+V(Xn)

Q: Write 5 characteristics that applies to the normal distribution curve. The monthly salaries of…

A: 5 characteristics that applies to the normal distribution curve in below step

Q: What is the interquartile range of 32, 21, 17, 38 and 6.

A:

Q: Let Z₁ X₁¯μX~N(0,1), and W₁ = = Yi-Hy σy ~N(0,1), for i = 1,2,3,...,10, then: σχ i) State, with…

A: Given Zi~N(0,1) and Wi~N(0,1)  Result: t~F(a,b) Then  Mean=E(t)=b/(b-2) V(t)=2b2 (a+b-2)/[a(b-2)2…

Q: QUESTION 15 If the coefficient of determination is 0.15 and the total sum of squares is 838, find…

A:

Q: (i) Calculate the probability that a randomly chosen policy holder from this portfolio will make a…

A: Let us define some events A : a policy holder is from group A. B : a policy holder is from group B.…

Q: (a) Set up the null and alternative hypotheses needed to attempt to establish that the mean annual…

A: Given: n1=12n2=12x¯1=1.49s1=0.33x¯2=0.90s2=0.26

Q: alculations. 155, 145, 155, 162, 180, 165, 172, 149, 170, 172 Exponential smoothing.  Use an alpha…

A: week   1 155 2 145 3 155 4 162 5 180 6 165 7 172 8 149 9 170 10 172

Q: 3) What is the Cramer-Rao lower bound for the variance of the unbiased estimator of parameter ? L…

A:

Q: 5-x 10' to receive from an insurance c f(x) = x = 1,2,3,4

A: The random variable x be the number of months with pdf is f(x)=5-x10,  x=1,2,3,4

Q: Consider a random variable X and the following probability distribution. P(X=12) = 0.0405 P(X = 33)…

A:

Q: Suppose that X is a discrete random variable with the following probability mass function where O…

A: X 0 1 2 3 P(x) 2θ/3 θ/3 2(1-θ)/3 (1-θ)/3

Q: Opinions about whether caffeine enhances test performance differ. You design a study to test the…

A: Given that We have to conduct hypothesis testing for the claim that caffeine the test…