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- percentage may be now, so a of 250 of last year's freshmen 4. 78% of all to in Fall 2015. You think that the a and tind that 84% returned, www.csun.edu/counts/one_year_continuation_rate-plip a. What is p? _ What is the number of successes? What is n? b. Write the hypotheses: Circle the best definition of p. the proportion of all of last year's freshmen who returned the proportion of all 2014 CSUN freshmen who returned the proportion of all CSUN freshmen among the 250 who returned C. Assuming that Ho is true, the sampling distribution of p has a mean of Use the formula to compute the SE of the sampling distribution of p. Complete this sketch of the sampling distribution of p. Put a scale on the horizontal axis. Then locate the result from the sample and shade in area representing the p-value. (Is the area representing the p-value on one side or two sides?) Use StatCrunch to find the p-value for this situation. e. Is there statistically significant evidence that the percentage is…Week 9 – Hypothesis Testing oExamples of null and alternative hypotheses that are one and two sided, explaining how to distinguish between them. oExamples of z-test for proportion, z-test for mean, t-test for mean with explanations of when you use each one and why, with computations. oInterpretations of p-values for each of the above with contextfind out probabilityof z score between -2.23 and 2.25
- 2.2 Losses at an oil refinery (in millions of dollars) due to excess heat can be divided according to the reason behind the generation of excessive heat. oversupplying fuel excess air carelessness of operator incomplete combustion 202 124 96 27 (a) Draw a Pareto chart. (b) What percent of the loss occurs due to (1) excess air? (2) excess air and oversupplying fuel? 2.7If a study determines the difference in average salary for subpopulations of mechanical engineers and civil engineers is NOT significant, then the subpopulations of mechanical and civil engineers are ________ different salaries. Guaranteed not to be earning Not earning Definitely earning Earning veryBonferroni adjustments are necessary when making multiple comparisons to avoid inflating the Type I error rate. True False
- the central limit theorem informs the numerator of the z- score for the sample means equation. true or false?An occurrence sampling study of students in the classrooms concluded that 40% of the students wear shorts to class in May. What is the range of values within which you feel the true percentage lies if (a) absolute accuracy is 10% and (b) relative accuracy is 10%?Let p be the population proportion for the following condition. Find the point estimates for p and q. Of 952 children surveyed, 108 plan to join the armed forces in the future. Part 1 The point estimate for p, p^, is ___ The point estimate for? q,q^, is ___
- X LA - Civics - Edgenuity.com O Marriott- Property Internet Ter O 1.13 IP Unit 1 Review E Edulastic: Formative and Sumn x |Portal A app.edulastic.com/student/assessment/5f8dcd8274dd4b0007ab80d2/class/5f4efd665dd16ded179a992f/uta/5fa3f810e524a8000850ce23/gid/0 Question 1/8 > NEXT A BOOKMARK O PLAY O STOP A rectangular yard has a width that is 10 feet longer than the width. If the area of the yard is 600 square feet, find the dimensions of the yard. 20ft. x 30 ft. B 10ft. x 60 ft. © 15 ft. x 25 ft. D 6 ft. x 16 ft. Ce @ 23 2$ % & 2 4. 6 7 9 e r y u dPWhat is a point estimate in a confidnece interval for a t test?Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A scientist claims that the mean incubation period for the eggs of a species of bird is less than 56 days. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim a statement of equality, it represents the does not contain *T contains hypothesis. lp
