null hypothesis p  0.90 against the alternative hypothesis p  0.90 at the 0.05 level of significance

Q: Ashoes factory distributesits brand of shoes Adidas in two cities (A) and (B).A random sample of 400…

A:

Q: A well-known brokerage firm executive claimed that 80% of investors are currently confident of…

A:

Q: Suppose a poll is taken that shows that 510 out of 1000 randomly selected, independent people…

A: We have given that  Sample size n=1000 ,favorable cases x =510 and alpha=0.05 Sample proportion…

Q: Results from a civil servant exam are shown in the table to the right. Is there sufficient evidence…

A: a. The null hypothesis for testing is defined as, H0​: White and minority candidates have the same…

Q: In a clinical trial, 17 out of 900 patients taking a prescription drug complaint of flu like…

A: From the provided information, Sample size (n) = 900 Out of which 17 patients taking a prescription…

Q: A manufacturer finds that in a random sample of 100 of its CD players, 96% have no defects. The…

A: The manufacturer wants to claim the smallest proportion of defects that will not be thrown into…

Q: For a one-tailed test (upper tail) with a sample size of 900, the null hypothesis will be rejected…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: Assume that you plan to use a significance level of a = 0.05 to test the claim that p1 = p2. Use the…

A: It is given that In a vote on the clean water bill, 46% of the 205 Democrats voted for the bill…

Q: A report claims that 46% of full-time college students are employed while attending college. À…

A: Given,n=60x=26p^=xnp^=2660=0.4333α=0.10

Q: Suppose a professional basketball player storically makes 37% of his three-point field als. After a…

A: Solution: Given information: n= 75 Sample size  x= 36 success  p^=xn=3675=0.48  Sample proportion…

Q: In a clinical trial, 19 out of 600 patients taking a prescription drug complained of flulike…

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Q: One study, based on responses from 1,019 randomly selected teenagers, concluded that 41% of…

A: According to the given information in this question We need find the test statistic and p value and…

Q: Test the claim that the proportion of people who are confident is smaller than 90% at the 0.025…

A: A well-known brokerage firm executive claimed that 90% of investors are currently confident of…

Q: A quality engineer is asked to determine whether less than 2% of all flasks received by its company…

A:

Q: Recently, a large academic medical center determined that 7 of 15 employees in a particular position…

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Q: Recently, a large academic medical center determined that 17 of 24 employees in a particular…

A: given information: let us consider x: having a male empolyee at a perticular position. x=17 n=24…

Q: In a study of 805 randomly selected medical malpractice lawsuits, it was found that 482 of them were…

A: From the provided information, Sample size (n) = 805 482 of them were dropped or dismissed so sample…

Q: A fast-food restaurant manager wants to know if more than 60% of his customers that request a water…

A: Given,   The sample proportion is,

Q: In a hypothesis test with hypotheses H0 : P greater than equal 0.76 and H1 : P less than 0.76 , a…

A: Denote p as the true population proportion. The null and alternative hypotheses are: Null…

Q: 5 a) The Hudson Valley Soft Drink Company is experimenting with two different recipes for a new…

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Q: It has been claimed that more than 40 percent of allshoppers can identify a highly advertised…

A:

Q: The manufacturer of a spot remover claims that hisproduct removes 90 percent of all spots. If, in a…

A: From the provided information, Sample size (n) = 200 Only 174 were removed with the manufacturer’s…

Q: A computer manufacturer believes that the proportion of hardware malfunctions is different in humid…

A: Given: Machines sold in Florida, n1 = 400 Machines sold in Florida, n2 = 400 x1 = 44 x2 = 24 Level…

Q: Conduct the appropriate hypothesis test and compute the p-value. Sunshine Air has determined that…

A: From the provided information, The hypotheses can be constructed as:Null hypothesis: H0: p = 0.06…

Q: In a clinical trial, 19 out of 864 patients taking a prescription drug daily complained of flulike…

A: The sample size is 864, population proportion is 0.019. Checking condition:

Q: Suppose that in a random selection of 100100 colored​ candies, 2323​% of them are blue. The candy…

A: It is given that the sample proportion of blue colored candies is 23% and the sample size is 100.The…

Q: In a clinical trial, 21 out of 650 patients taking a prescription drug complained of flulike…

A:

Q: In a previous Paul, 44% of adults with children under the age of 18 reported that their family ate…

A: 44% of the adults with children under the age of 18 reported that their family ate dinner together…

Q: A study was conducted simultaneously in two different communities in New York City to examine an…

A: p-value: A p-value is used to measure the probability to obtain the results and the assumption was…

Q: 6. A sample poll of 500 voters from Michigan and 300 voters from Wisconsin showed that 51% and 49%…

A: Given, n1=500, p1=0.51n2=300, p2=0.49 α=0.05

Q: In a clinical trial, 29 out of 894 patients taking a prescription drug daily complained of flulike…

A: The lower and upper bound of the confidence interval is computed by p^±z(SE), where z depends on the…

Q: A large automobile insurance company selected samples of single and married male policyholders and…

A:

Q: In a clinical trial, 20 out of 880 patients taking a prescription drug daily complained of flulike…

A: Given,n=880x=20p^=xnp^=20880=0.0227α=0.05

Q: The appropriate null hypothesis for a two-tailed, independent samples t-test is  ____________.

A: We have to find Ho.

Q: An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 800…

A: It is known that if the p-value is less than the level of significance, the null hypothesis is…

Q: A large automobile insurance company selected samples of single and married male policyholders and…

A: Given Information :  A large automobile insurance company selected samples of single and married…

Q: In a clinical trial, 20 out of 880 patients taking a prescription drug daily complained of flulike…

A: Given,n=880x=20p^=xnp^=20880=0.0227α=0.05

Q: In one study of smokers who tried to quit smoking with nicotine patch​ therapy, 38 were smoking one…

A: Given information No of people smoking x = 38 Total people n = 38 + 33 = 71

Q: In a clinical trial, 26 out of 886 patients taking a prescription drug daily complained of flulike…

A: The value of p0 is 0.026 and the sample size n is 800.

Q: In a hypothesis test with hypotheses Ho :p 2 0.76 and H1 :p < 0.76, a random sample of size 979…

A: Given data sample size, n =979

Q: The Genetics and IVF Institute conducted a clinical trial of the YSORT method designed to increase…

A: Given Information:  291 babies were born to parents using the YSORT method, and 239 of them were…

Q: Conduct a two-way hypothesis testing to prove whether there is a difference in the variance of the…

A: Given: α=0.05

Q: A manufacturer of nickel-hydrogen batteries randomly selects 100 nickel plates for test cells,…

A: Given P=0.10 x=14 n=100

Q: A fast-food restaurant manager wants to know if more than 60% of her customers that request a water…

A: Solution: Let X be the number of customers filled the water cup with soda and n be the sample number…

Q: Use the traditional method to test the given hypothesis. Assume that the samples are independent and…

A: We are given:Of 1000 people who said that they attend a religious service at least once a week, 31…

Q: A two-tailed hypothesis test is being used to evaluate a treatment effect with α = .05. If the…

A: We have given that  A two-tailed hypothesis test with α = 0.05 and z-score is -2.24

Q: In a clinical trial, 23 out of 873 patients taking a prescription drug daily complained of flulike…

A: p0  = 0.022 1-p0 = 0.978 n = 873

Q: If, in a​ one-tail hypothesis test where H0 is only rejected in the upper​ tail, the p-value=0.6792…

A: Given information: In a​ one-tail hypothesis test where H0 is only rejected in the upper​ tail, the…

Q: A university claims that their employment rate directly after graduation is 80%. In a sample of 700…

A: Given that, x=609,n=700 The sample proportion is,