publisher reports that 67% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 250 found that 62%of the readers owned a particular make of car. Is there sufficient evidence at the 0.01 level to support the executive's claim? is there a sufficient evidence or is there no sufficient evidence

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: The hypothesized mean is 140.

Q: Professor Jennings claims that only 35% of the students at Flora College work while attending…

A: Given: Sample size,n= 76 Number of students who have jobs,x= 35  Level of significance=0.05

Q: It is believed that 11% of all Americans are left-handed. A college needs to know the number of…

A: The objective of this question is to identify the random variable, population parameter, and…

Q: testing in this problem? mean proportion What is the level of significance? e the null and alternate…

A: Given:p_0=35%=0.35 As the population proportion is given, thus we are testing the single…

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A:

Q: It is believed that 11% of all Americans are left-handed. A college needs to know the number of…

A: As per the question we have 11% of all Americans are left-handed College recorded whether the…

Q: (a) Find the mean of p. (b) Find the standard deviation of p. (c) Compute an approximation for P…

A:

Q: The admisnistrators of Rowan university wants to know more about the knowledge of students regarding…

A: Given information Sample size(n) = 35 Sample mean = 58 Standard error = 3.2 Significance level (α) =…

Q: A manufacturer wanted to know if more coupons would be redeemed if they were mailed to the female in…

A: Solution: Given information: n=50 Sample size  xd= 1.5   Difference of sample mean sd= 4.75…

Q: What is the alternative hypothesis in the problem? The average family family size in the Philippines…

A: Given The average family size in the philippines was reported as 4.30 Mean=μ=4.30 l.o.s.=α=0.10

Q: You work for a marketing firm that has a large client in the automobile industry. You have been…

A: (a) Critical value: Using the z-table, the critical value at 98% confidence level is  z0.022=2.326…

Q: Analysis of 1,064 deaths of famous popular musicians showed that 31 percent were related to alcohol…

A: A sample is a representative part of the population. A statistic that is based on the sample values…

Q: It is believed that 11% of all Americans are left-handed. A college needs to know how many…

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

Q: In the US, 55% of all people have type O blood, 30% have type A blood, 10% have type B blood and 5%…

A: Determine the critical value   Follow the instruction to obtain the chi square critical value:…

Q: Your friend Micah helped you with the null and alternative hypotheses... Ho : The proportions are…

A: The Chi-square goodness of fit test is a statistical hypothesis test used to determine whether a…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…

Q: the food marketing insititute reports that 28% of households spend less than $100 per week on…

A: the probability that less than 102 households spend less than $100 per week on groceries is…

Q: Some people are concerned that new tougher standards and high-stakes tests adopted in many states…

A: Given : x = 210 n = 1782 Hypothesis : H0 : p ≤ 0.103 Ha : p > 0.103 p^ = 2101782 p^ = 0.1178 sp^…

Q: What are the null hypothesis ( H0 ) and the alternative hypothesis ( H1 ) that should be used for…

A: a) null Hypothesis H0 - μ =145     Alternate Hypothesis H1 - μ <> 145 (μ not equal to 145) b)…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: We have given that Mean(µ) = 140 Sample mean (x̅) = 134 Standard deviations (s) = 28

Q: It is believed that 11% of all Americans are left-handed. A college needs to know the number of…

A: 1. Here the parameter of our interest is proportion of left handed American (p) 2. Our null…

Q: Suppose a professor wants to know if students in her statistics class have a good grasp of basic…

A: Given: Sample size n=6 Sample mean x¯=∑i=1nXin=62+92+75+68+83+956=79.167 Sample standard deviation…

Q: If we have a data set containing the age and marital status of large group of individuals and we ask…

A: Independent samples t test: The independent samples t-test can be used to examine a possible…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: Given data Hypothesized mean = 142 Population Standard deviation = 25 Sample size n = 100…

Q: According to the Pew Research Center,on the propotion of the American population who use only a…

A: A)Verifying the conditions:It is given that, the proportion of the American population who use only…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: Given that  Suppose the true mean score among the general population on the subsection is 14. Fill…

Q: The mean amount of money last year spent by customers at the Texas Roadhouse in Cedar Falls, Iowa…

A: Given : The mean amount of money last year spent by customers at the Texas Roadhouse in Cedar Falls,…

Q: According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34…

A: The level of significance is 0.01 (=1%).

Q: An airline's public relations department says that the airline rarely loses passengers' luggage. It…

A: From the provided information, Sample size (n) = 195 120 people lost luggage on that airline were…

Q: Social networking is becoming more and more popular around the world. Pew Research Center used a…

A: Introduction: Denote p1, p2, p3, and p4 as the true proportions of adults using social networking…

Q: You are at a meeting for student leaders on campus and you hear Dr. Lindsay say that 64% of…

A:

Q: According to the Pew Research Center,on the propotion of the American population who use only a…

A: Solution:Part(D):Finding the test statistic value for the hypothesis test for…

Q: opinion of adult Americans to the question "If you or your spouse were pregnant, would you want the…

A: Here we conduct Z test for proportion.

Q: A survey was conducted to determine whether adult participation in physical fitness programs varies…

A: State the hypotheses. Null hypothesis: Alternative hypothesis: Correct option: Option 1.

Q: In June 2012 the Gallup organization conducted a pollusing a random sample of 1004 adults, aged 18…

A: From the given information, we have confidence Interval is 95%  Sampling error is 4 percentage…

Q: school administrator claims that 85% of the students at his large school plan to attend college…

A: Given that ; Sample size (n) = 50 P = 85 %  P(cap) = 76%  By using one sample proportion test we get

Q: Professor Jennings claims that only 35% of the students at Flora College work while attending…

A:

Q: In the US, 60% of all people have type O blood, 20% have type A blood, 15% have type B blood and 5%…

A: We are rejecting Ho, As P-value < 0.01

Q: The admisnistrators of Rowan university wants to know more about the knowledge of students regarding…

A: State the given values. Now, we know that

Q: Suppose you want to test the claim that a population mean equals 38.  State the null hypothesis.

A: Given that, Claim: population mean equals 38.

Q: An article published in the “American Journal of Public Health” describes the results of a health…

A: No. of 50 years of age or older male convicts in the administered health survey, The sample…

Q: A poll in one country indicated that 48​% favor imposing the death penalty​ (the country currently…

A: Sample Size:The formula for the sample size is as follows:

Q: n the US, 60% of all people have type O blood, 20% have type A blood, 15% have type B blood and 5%…

A: State the hypotheses.   The original claim is, Obtain the degrees of freedom. The degree of…