Company records indicate that less than 24% of employees commute to work using public transportation. You suspect this is incorrect and for a sample of 157 employees, and find that 18% of them take public transportation to work. Test the claim using a 10% level of significance.       What is the p-value for this test?

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

A:

Q: Please help with the last part of this question finding the test statistic. A study was conducted to…

A: Given n1=312 X1=63 n2=300 X2=12

Q: In 2011, a U.S. Census report determined that 65% of college students are working students. A…

A: 1. Determine the test statisticz = -0.58 2. Find the p-valueP-value = 0.5615 Explanation:Step 1:…

Q: What is an “average” z-score? Explain your answer?

A: A Z-score is a numerical measurement that describes a value's relationship to the mean of a group of…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 33%. Given the…

A: Answer: From the given data, Population proportion (P) = 33% = 0.33 Sample size (n) = 1875 x = 436…

Q: new soft drink is being market tested. A sample of 356 individuals participated in the taste test…

A: Formula : Test statistic :

Q: What would the p-value be for a sample if the test statistic is 0.968 and the significance level is…

A: Given data: Test statistics = 0.968 The test is assumed to be right tailed test. Significance level…

Q: Does the sample size ? affect the mean of all possible sample means? Explain your answer.

A: According to central limit theorem, for large sample (>30) or if the population follows normal…

Q: It the 1980s, it was generally believed that congenital abnormalities affected about 7% of a large…

A: The question is about hypo. testing Given : Popl. prop. of cong. abnormalities affected ( p ) = 0.07…

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

A: We have to find conclusion from given solution.

Q: Has To answer that question, we consider the Cherry Blossom Race, a 10-mile race ru Washington D.C.…

A: note that,  population standard deviation is known.

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: A software company is interested in improving customer satisfaction rate from the 80% currently…

A: The Null and Alternative Hypotheses is given by: H0: p0=0.80 H1: p0≠ 0.80 The sample proportion is…

Q: Testing Claims About Proportions. In Exercises 9–32, test the given claim. Identify the null…

A: Given : sample size (n)=21346sample proportion ( p^)=0.64 Claim : most people believe that the Loch…

Q: Many people believe that criminals who plead guilty tend to get lighter sentences than those who are…

A: The null and alternative hypotheses are: H0: The sentence (sent to person or not sent to person) is…

Q: Hello can you please help me with this? Can you please provide details so I can understand and if…

A: The objective of this question is to test the claim that the proportion of homes in Oregon that are…

Q: help me fix a         thank you!

A:

Q: The 40-hour work week is considered the standard in American society today. Imagine you wish to use…

A: The t-statistic is generally higher than the z-statistic at smaller degrees of freedom, i.e. at…

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: It is given that x=176, n=267 and P=0.61.

Q: What is the power of the test in the statistical test?

A: Statistical Test: A statistical test is a tool that helps people make analytic conclusions about a…

Q: There is not enough evidence to show that population proportion of adults that have never been…

A: Given data number of success , x= 250.0 sample size, n = 97 population…

Q: how many of the 200 tests, using a significance level of 5%, will incorrectly find significance

A: Here given  We are conducting many hypothesis tests to test a claim. Assuming the null hypothesis is…

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

A:

Q: Provide a scenario for which you would use an independent sample t test. Also, explain in your own…

A: Introduction :-  Here we have to explain  Condition where independent sample t test can be applied…

Q: The test statistic is correct, but the p-value is wrong.

A: Use Excel function "=NORM.S.DIST(2.45,TRUE)", to obtain the p-value.

Q: It the 1980s, it was generally believed that congenital abnormalities affected about 7% of a large…

A:

Q: What is the relationship between error in results and sample size? (explain)

A: Formula to calculate error :  Error = Z*(standard deviation/√n)  n = (Z*standard deviation/Error)2

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: Sample size n =196 Favorable cases x =126 Sample proportion p^=x/n  =126/196 =0.6429

Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A: Given : Claim : The proportion of those favoring stricter gun control has changed from 0.55.

Q: What does the p-value for a test result represents?

A:

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Two sample proportion z test: Two sample proportion z test is used to test the significance…

Q: Consumer Reports did a survey of 1100 adults and found that 565 were unhappy that their food did not…

A: Given, The sample proportion is, The null and alternative hypothesis is:

Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

A: Variables are of different types. The correct classification of variables and the identification of…

Q: A researcher gathered a sample of participants who volunteered for a studying of phobias. She…

A: A researcher gathered a sample of participants who volunteered for a studying of phobias. She…