You take a simple random sample of size 25 from a very large population in which the true proportionip=0.1. Which statement below best describes what you know about the sampling distribution of p?(0.1)(0.9)(a) H,-0.1; o,-the distribution is skewed right.25(0.1)(0.9).25(b) H,=0.1; o,=.; the distribution is skewed left.(0.1)(0.9).(c) ,=0.1; o,=the distribution is approximately Normal.%3D25(0.1)(0.9)(d) ,the distribution is not approximately Normal.25=0.1; we cannot use the formula o,(0.1)(0.9); the distribution is approximately Normal.25(e) =0.1; we cannot use the formula o,

Answered: u take a simple random sample of size…

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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A scientist claims that pneumonia causes weight loss in mice. The table shows the weights (in grams) of six mice before infection and two days after infection. At a=0.05, is there enough evidence to support the scientist's claim? Assume the samples are random and dependent, and the population is normally distributed. Mouse 1 4 6. Weight (before) Weight (after) 20.8 22.4 21.7 23.6 19.6 19.9 20.8 22.5 21.5 23.7 19.5 19.8 1) Find the standardized t test 2) Find the P-value 3) Decide whether to reject or fail to reject the null hypothesis. 4) Interpret the decision in the context of the original claim. 19,600
The accompanying data are x = advertising share and y = market share for a particular brand of soft drink during 10 randomly selected years. x 0.104 0.072 0.072 0.077 0.086 0.047 0.060 0.050 0.070 0.052 y 0.137 0.127 0.120 0.086 0.079 0.076 0.065 0.059 0.051 0.039 b)Calculate the equation of the estimated regression line. (Round your answers to four decimal places.) d)Calculate a point estimate of ?e. (Round your answer to five decimal places.)
When Cohen's d indicates a medium effect (based on Cohen's conventions), the amount of overlap between the two distributions being compared is ________%. Question 5 options: 15 67 53 75
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A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of 9 patients. The effective period of the tranquilizer for each patient (in hours) was as follows: 2.5; 2.9; 3.1; 2.3; 2.3; 2.2; 2.8; 2.1; and 2.4.
ASK YOUR TEACHER Nationally, about 11% of the total U.S. wheat crop is destroyed each year by hail.t An insurance company is studying wheat hail damage claims in a county in Colorado. A random sample of 16 claims in the county reported the percentage of their wheat lost to hail. 14 7 10 11 12 19 14 11 9 8 23 19 13 7 10 7 The sample mean is x = 12.1%. Let x be a random variable that represents the percentage of wheat crop in that county lost to hail. Assume that x has a normal distribution and a = 5.0%. Do these data indicate that the percentage of wheat crop lost to hail in that county is different (either way) from the national mean of 11%? Use a = 0.01. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? O Ho: H = 11%; H,: µ 11%; right-tailed O Ho: H + 11%; H,: u = 11%; two-tailed O Ho: H = 11%; H,: u + 11%; two-tailed (b) What sampling distribution will you use? Explain the rationale for your…
You take a simple random sample of size 25 from a very large population in which the true proportion is p = 0.1. Which statement below best describes what you know about the sampling distribution of p ? %3D Hp-hat 0.1; we cannot use the formula Op-hat = (0.1)(0.9) : the distribution is not approximately normal, 25 Hp-hat = 0.1; op-hat = (0.1)(0.9) : the distribution is skewed. 25 Hp-hat = 0.1; Op-hat = (0.10.9) ; the distribution is approximately normal. 25 Hn-hat = 0.1; we cannot use the formula op-hat = V (0.1)(0.9) 25 Op-hat ; the distribution is approximately normal. * Previous IMG 0218.jpeg Next Activa PAUSE PRT F12 F11 F10 F9 M3 PO UP F8 M2 HOME F7 M1 F6 INS F5 F4 M6 PO DN M4 DEL END
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Answer the number 14 question.
Which equation is used to convert a sampling distribution into Student's t-distribution? A B C E F x -4 (n-1)s F = t = t s/Vn Z = %3D s/Vn OB D OE
3

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u take a simple random sample of size 25 from a very large populat 0.1. Which statement below best describes what you know about (0.1)(0.9) O 4=0.1; a,=, ; the distribution is skewed right. 25 ),-0.1; a,- (0.1)(0.9), ; the distribution is skewed left. 25 %D