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l T-Mobile LTE 11:23 AM ร 49%! × HW10-CHAP 8 N 9 STA 250.pdf 2 of 5 SHORT ANSWER. Write the word er phrase that best completes each statenest or answers the question S A sample of 36 students anroill in a program that claims to impeove scoees on the quantitative reasoning portion of the Graduate Record Examination (GRE). The participants take a mock GRE test before the program begins and again at the end to measure their improvement The mean number of peints impeeved was x11. Assume the standand deviation is σ-43 and let 'v be the population mean number of points improved To determine whether the progam is effctive,a est is made of the hypotheses o-0 versus H Doyou reject NO a thea-005 level? MULTIPLE CHOICE. Choose the one alternmative that best completes the stae nent or answers the question. e) A sample of 45 students enrell in a program that claims to impeove scoees on the quantitative reasoning portion of the Graduate Record Examination (GREA The participants take a mock GRE test before the program begins and again at the end t The mean number of points improved wax-7. Assume standard deviation is σ-70 and let a be the population mean mumber of points impovod To detcrmine whether the program is effective, a test is made of the hypotheses N- :0 at th 0.01 level Compute the P-value A)02185 8)0.1683 C) 0.1909 D) 0 2512 7)The mean nnual tuitoe and fees for sample of 13 private coleges was 531,90) with a standard deviation of S4600 A dotplot shows that it is reasonable to assume that the population is approximatcly normal. You wish to lest whether the mean tuition and fees for private colleges is different from 534,400 State a coeclusion regarding Hor Use a-001 level of significance. Aj Do not reject Ho There is insufficient evidence to conclude that the mean annual tuition and fees i different from $34.400 8) There is not enough information to draw a conclusion C) Rejest Mo The mean annual tuition and fees appears to be dfferent from $34,400 SHORT ANSWER. Wrie the word eer phrase that best completes each statenest or nswers the question Open With Print l T-Mobile LTE 11:20 AM 50%! XHW10_CHAP 8 N 9 STA 250.pdf 5 of 5 Answer Key Testname: HWI0 CHAP 8N9 11 C 2 C Si No e D 7)A ii). .1 .748; 7 degrees of freedom There is insufficient evidence to conclude that the mean annual tuition and fees is il). De not neject Ho different from $35,300. 10 A 11) B i)0.343 iii) 61 iv) No. There is insufficient evidence勵conclude áathe mean weight losses differ Open With Print

Answer 1

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06 Hy potheses 5 given as (right tai led test Leuel o 子 p It〉 0.6708 option D 31.900 x = $34,400 Cs Scanned with CamScang O. 0 LLave

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