13. Foofy studies if hearing an argument in favor of an issue alters participants' at-titudes toward the issue one way or the other. She presents a 30-second argumentto 8 people. In a national survey about this issue, µ = 50. She obtains X = 53.25and s = 569.86. (a) What are H, and H,? (b) What is tobi? (c) With a = .05, whatis fer? (d) If appropriate, compute the confidence interval for µ. (e) What conclu-sions should Foofy draw about the relationship?

Answered: Image /qna-images/answer/608c3f71-b40d-422e-b77c-93e73b768787.jpg

Answered: 13. Foofy studies if hearing an…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A medical researcher says that 25% of U.S. adults are smokers. In a random sample of 272 US, adults, 57 say that they are smokers at a- 0.05, is there enough evidence to support that less than 25% of U.S. adults are smokers? What shall we use for Ho and Hy? Hg p-0.25 Hp 025 Ho p> 025 Hi:p<025
The manager of a resort hotel stated that the mean guest bill for a weekend is $600 or less. A member of the hotel's accounting staff noticed that the total charges for guest bills have been increasing in recent months. The accountant will use a sample of future weekend guest bills to test the manager's claim. (a) Which form of the hypotheses should be used to test the manager's claim? Explain. Ho: u 2 600 HaiH 600 Но: и 3D 600 Ha: u + 600 The hypotheses Ho: µ 2 600 and H: µ 600 should be used because the accountant wants to test the manager's claim that the mean guest bill u is less than or equal to 600 and find evidence to support u > 600. The hypotheses Ho: u = 600 and H: µ + 600 should be used because the accountant wants to test the manager's claim that the mean guest bill u is equal to 600 and find evidence to support u + 600. (b) What conclusion is appropriate when H. cannot be rejected? We are not able to conclude that the manager's claim is wrong. We cannot conclude that u >…
Q. 47 How can you make multiple comparison in Friedman's test when H, is rejected?
Express the null and alternative hypotheses in symbolic form for this claim: the mean weight of male nurses working at a local hospital is less than 187 lbs. Note that the mean weight in the sample taken is 197 lbs. H1:H
How would you write the null and alternative hypotheses?
The proportion of defective items is not allowed to be over 12%. A buyer wants to test whether the proportion of defectives in his shipment of 1000 items exceeds the allowable limit. The buyer takes a SRS of 100 items and finds that 19 are defective. State the null and alternative hypotheses for this test. Group of answer choices Ho: p = 0.12 vs Ha: p > 0.12 Ho: p = 0.19 vs Ha: p ≠ 0.12 Ho: p = 0.12 vs Ha: p < 0.19 Ho: p = 0.12 vs Ha: p = 0.19
In this question, the real numbers in your answers should be given with three significant digits of accuracy after the decimal point. The public health authorities of a small town have divided the population into three categories: covid- negative, covid-positive, and hospitalised. After performing regular, extensive tests, they have observed that in each successive week: Among those who are negative, 95% remain so, 4% become positive, and 1% need to be hospitalised. • Among those who are positive, 75% recover and become negative, 20% stay positive, and 5% need to be hospitalised. Among those who are hospitalised, 60% recover and become negative, 30% are released from hospital but remain positive, and 10% remain hospitalised. (a) After representing the population in a given week as a column vector v = [n; p; h], where n, P, and h represent the number of people in the population who are negative, positive, and hospitalised respectively, write down a matrix M for which [n', p', h'] = M[n;…
in this question tell them to use X=2 and XX=82
How would a person set up the hypotheses if they wanted to test the claim: the mean temperature of a October day in Oahu is different from 81 degrees? A: Ho µ = 81° vs HA H > 81° B: Ho H = 81° vs HA H 81° A
I Need help with answering question 2 and 3. To conclude from the table given, there is a big difference in the hotels in the UK. The reason is that the P-Value is 0.5> so, therefore, we accept the value, therefore it's true that there is a big difference in the hotels in the UK. My question is, is my statement correct or am I wrong? This the information that given to me How likely is it that you would recommend <name hotel> to a friend or colleague on a scale from 0 (not likely) to 10 (most likely) What are the differences between hotels in UK: London, Birmingham, Leeds Thank you!
Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?

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