ofLO%242.Based on their records, a hospital claims that the proportion, p, of full-term babies born in the communitythat weigh more than 7 pounds is 36%. A pediatrician who works with several hospitals in the communitywould like to verify the hospital's claim. In a random sample of 180 babies born in the community, 46weighed over 7 pounds. Is there enough evidence to reject the hospital's claim at the 0.01 level ofsignificance?Perform a two-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. (If necessary, consult a list offormulas.)(a) State the null hypothesis H, and the alternative hypothesis H.H:p=0.36H: p<0.36(b) Determine the type of test statistic to use.(c)places.)(c) Find the value of the test statistic. (Round to three or more decimalORD OSO D=DOD-2.921(d) Find the p-value. (Round to three or more decimal places.)(e) Can we reject the claim that the proportion of full-term babies born in the communitythat weigh more than 7 pounds is 36%?OYes ONotab1.3.4.9.7.8.6.0.opun%23%3Di%3DABC

For the given data Perform z test for one proportion test

Answered: of LO %24 2. Based on their records, a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The mayoral challenger claims that less than 30% of residents over the age of 25 have bachelor’s degrees in our city. To test this claim, you survey 80 adults over the age of 25 and find only 18 possess bachelor’s degrees. At the 5% level of significance, is there enough evidence to SUPPORT the challenger’s claim? Null: Ho alternative:Ha (use u for mean and p for proportion)
In a study conducted by the U.S. Department of Health and Human Services, a sample of 546 boys aged 6–11 was weighed, and it was determined that 89 of them were overweight. A sample of 508 girls aged 6–11 was also weighed, and 74 of them were overweight. Can you conclude that the proportion of boys who are overweight differs from the proportion of girls who are overweight? Find the P-value and state a conclusion. Round the answer to four decimal places.
According to a survey conducted by the Association for Dressings and Sauces, 20% of American adults eat salad once a week. A nutritionist suspects that this percentage is not accurate. She conducts a survey of 579 American adults and finds that 104 of them eat salad once a week. Use a 0.10 significance level to test the claim that the proportion of American adults who eat salad once a week is equal to 20%. Claim: p = 0.2 v which corresponds to H0: p = 0.2 Opposite: p 0.2 v which corresponds to H1 p + 0.2 The test is: right-tailed The test statistic is: z= (to 2 decimals) The Critical Value is: z= Based on this we: Fail to reject the null hypothesis v Conclusion: There does not proportion of American adults who eat salad once a week is equal to 20%. v appear to be enough evidence to support the claim that the Submit Question thing 近

A software company is interested in improving customer satisfaction rate from the 61% currently claimed. The company sponsored a survey of 196 customers and found that 129 customers were satisfied. What is the test statistic z?
In a study of store checkout scanners, 1234 items were checked and 21 checked items were overcharges. Use a 0.05 significance level to test the claim that with scanners, 1% of sales are overchanrges. (Before scanners were used, the overcharge rate was estimated to be about 1%). a. Define the parameter A. p = The proportion of all sales that are incorrect B. p = The proportion of all sales that are overcharges C. mu = The mean number of sales that are overcharges D. mu = The proportion of all sales that are undercharges b. State the null and alternative hypotheses A. Upper H 0 : p equals 0.01 Upper H 1 : p not equals 0.01 B. Upper H 0 : p equals 21 Upper H 1 : p less than 21 C. Upper H 0 : p greater than 0.01 Upper H 1 : p equals 0.01 D. Upper H 0 : mu not equals 0.01 Upper H 1 : mu equals 0.01 c. Calculate the sample proportion ModifyingAbove p…
here are the 25 data set 4;4;5;5;5;6;6;6;6;7;7;7;7;8;8;8;9;9;9;10;10;10;11; 12;12 mean :7.64 sd: 2.3431 9.) State whether it is appropriate to use the Empirical rule to approximate the proportion of data between a set of values for you data set? Why or why not?
In a previous poll, 30% of adults with children under the age of 18 reported that their family ate dinner together seven nights a week. Suppose that, in a more recent poll, 328 of 1160 adults with children under the age of 18 reported that their family ate dinner together seven nights a week. Is there sufficient evidence that the proportion of families with children under the age of 18 who eat dinner together seven nights a week has decreased? Use the a = 0.01 significance level. Because npo (1-Po) = 243.6 > 10 and the sample size is less than 5% of the population size, and the sample can be reasonably assumed to be random, the requirements for testing the hypothesis satisfied. are (Round to one decimal place as needed.) What are the null and alternative hypotheses? = 0.30 versus H: p < 0.30 Ho: p (Type integers or decimals. Do not round.) Find the test statistic, zo Zo = - 1.28 (Round to two decimal places as needed.) Find the P-value. P-value = (Round to three decimal places as…
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