According to its records, a hospital claims that the proportion,p, of full-term babies born in the community who weigh more than7pounds is40%. A pediatricianwho works with several community hospitals would like to verify the hospital's claim and investigate. In a random sample of215babies born in the community,90weighed more than7pounds. Is there sufficient evidence to reject the claim at the significance level of0.10?Perform a two-tailed test. Then complete the parts below.Carry intermediate calculations to three or more decimal places. (If necessary, you can refer to a list of formulas .)(to) Formulate the null hypothesish and the alternative hypothesish0(b)(c)(d)h :0h :011'Determine which type of test statistic to use.(Choose an option)Find the value of the test statistic. (Round to three or more decimal places.)0Find the p-value. (Round to three or more decimal places.)(and) Can we reiect the claim that the proportion of term babies born in hospitalμ3X SO0=0 □□☐#0X0<0РS0 (to)(b)(c)(d)Formulate the null hypothesish and the alternative hypothesish 1.0hh01:0Determine which type of test statistic to use.(Choose an option)Find the value of the test statistic. (Round to three or more decimal places.)ПFind the p-value. (Round to three or more decimal places.)0(and) Can we reject the claim that the proportion of term babies born in hospitalwho weigh more than7pounds is40%?O Yeah O Noμ|xX0о рS0=0 OSOX□≠0 O

Population proportion p=40%=0.40Sample size n=240, Favorable cases X=72,, level of significance…

Answered: weighed more than 7pounds. Is there…

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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Determine the given of the problems below and formulate the null and alternative hypotheses both in words and symbols. Write your answer in your notebook. Please foliow the format in the examples. 1A health specialist wants to determine the average number of hours a person exercises in a day during the quarantine period. She found out that the mean number of hours a person exercises in a day during the quarantine period is 80 minutes. A random sample of 29 persons were surveyed and found that their mean is 65 minutes and a standard deviation of 10 minutes. Test the hypothesis at 2% level of significance and assume that the population is normally distributed. 2. A study was conducted to determine the marrying age of teachers. It was found out that the mean marrying age of teachers is 30 years old. Fifteen teachers were surveyed randomly and found that their mean marrying age was 33 years old with a standard deviation of 5 years. Use 10% level of significance to test the hypothesis and…
I already answered a bunch of them I just need help with C and D. Thanks!
Past experience indicates that the time required for high school seniors to complete a standardized test is a normal random variable with a standard deviation of 6 minutes. Test the hypothesis that o = 6 against the alternative that o %3D H1:0? = O C. Ho: o? O O B. X Oc. ?< Find the test statistic. (Round to two decimal places as needed.)
30
Suppose taht you ran the following hypothesis test: H0: p1-p2<=0 Ha: p1-p2>0 and the data you collected produced a test statistic of Z0=1.68. Calculate the P value for this Test statistic. Round off your answer to the 4th decimal.
You may need to use the appropriate appendix table or technology to answer this question. Consider the following hypothesis test. H0: p ≥ 0.75 Ha: p < 0.75 A sample of 270 items was selected. Compute the p-value and state your conclusion for each of the following sample results. Use ? = 0.05. (a) p = 0.68 Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. Do not reject H0. There is sufficient evidence to conclude that p < 0.75.Reject H0. There is sufficient evidence to conclude that p < 0.75. Do not reject H0. There is insufficient evidence to conclude that p < 0.75.Reject H0. There is insufficient evidence to conclude that p < 0.75. (b) p = 0.71 Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion.…
Use the 5 steps solution on Hypothesis Testing. A. Null and alternative hyposthesis B. Significance level type of test (one-tailed or two-tailed type) C. Test statistics or statistical tool D. Observed P-value E. Decision (reject Ho or not)
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A baseball team claims that the mean length of its games is more than 1.6 hours. State Ho and H₂ in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. OA. The null hypothesis expressed in words is, "the mean length of a baseball team's games is 1.6 hours." The null hypothesis is expressed symbolically as, "Ho: p= 1.6." OB. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at least 1.6 hours." The null hypothesis is expressed symbolically as, "Ho: 21.6." OC. The null hypothesis expressed in words is, "the mean length of a baseball team's games is not 1.6 hours." The null hypothesis is expressed symbolically as, "Ho: μ‡ 1.6." D. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 1.6 hours." The null hypothesis is expressed…
Due to concerns about the safety of bariatric weight loss surgery, in 2006 the Centers of Medicare and Medicaid Services (CMS) restricted coverage of bariatric surgery to hospitals designated as Centers for Excellence. Did the CMS restriction improve the outcomes of bariatric surgery for Medicare patients? Among the 1847 Medicare patients in the study having surgery in the 18 months preceding the restriction, 270 experienced overall complications, whereas in the 1639 patients having bariatric surgery in the 18 months following the restriction, 170 experienced overall complications. (a) What are the sample proportions of Medicare patients who experienced overall complications from bariatric surgery before and after the CMS restriction? Let p, be the sample proportion with complications before the restriction, and p, be the sample proportion with complications after the restriction. (Enter your answers rounded to four decimal places.) P2 How strong is the evidence that the proportions of…
A- two-tailed, right tailed or left tail
An IO psychologist believes that layoffs in at a plant may have increased stress felt by the people who retained their positions. He measures 7 employees before and after the layoffs. The results are below. Use ?=.052????α=.052tail to evaluate the statistics. a. What design was used? b. State the hypotheses in words and symbols c. Show how t was calculated & evaluate the statistic

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