Choose the correct conclusion below.A. Do not reject the null hypothesis. There is insufficient evidence to conclude that the number of parents who feel that students are not being taught enough math and science is significantlydifferent from 20 years ago.OB. Reject the null hypothesis. There is insufficient evidence to conclude that the number of parents who feel that students are not being taught enough math and science is significantly differentfrom 20 years ago.OC. Do not reject the null hypothesis. There is sufficient evidence to conclude that the number of parents who feel that students are not being taught enough math and science is significantlydifferent from 20 years ago.O D. Reject the null hypothesis. There is sufficient evidence to conclude that the number of parents who feel that students are not being taught enough math and science is significantly differentfrom 20 years ago. Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 233 of700 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twentyyears ago? Use the x = 0.05 level of significance.Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2).Because npo (1-Po) =hypothesis are satisfied.(Round to one decimal place as needed.)What are the null and alternative hypotheses?Ho: ▼versus H₁:(Type integers or decimals. Do not round.)Determine the test statistic, Zo.> 10, the sample size isB. Za/2= ±OB.CZo =(Round to two decimal places as needed.)Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice.(Round to two decimal places as needed.)ⒸA. Z =less than 5% of the population size, and the sampleis given to be random,the requirements for testing the

The value of np0(1–p0) is obtained below as follows: From the information, given that…

Answered: Twenty years ago, 54% of parents of…

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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Which statement accurately describes the proportions in the tails of a normal distribution? The proportion in the left-hand tail is smaller than the proportion in the right-hand tail. O Proportions in both the left-hand and right-hand tails tend to be relatively large. OProportions in both tails are the same., O Proportions in both tails are negative.
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Transforming an entire distribution of scores into z-scores will not change the shape of the distribution. a. True b. False
In a bell-shaped, normal distribution, a. mode = 0 b. median > mean c. median < mean d. median = mean
A survey of 2305 adults in a certain large country aged 18 and older conducted by a reputable polling organization found that 411 have donated blood in the past two years. Complete parts (a) through (c) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). A Question Help (a) Obtain a point estimate for the population proportion of adults in the country aged 18 and older who have donated blood in the past two years. p= 0.178 (Round to three decimal places as needed.) (b) Verify that the requirements for constructing a confidence interval about p are satisfied. The sample a simple random sample, the value of is which is 10, and the less than or equal to 5% of the (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer. 1 part remaining Clear All Check Answer PAES MAY W 4 F12 F11 F9 F10 F8 F7 F6 吕口 F3 F5 F4 F2 & * $ % 7 8. 2 3 4 T Y U E R Q G H iİŞ
Suppose the value of a stock varies each day from $10.82 to $23.17 with a uniform distribution. Find the third quartile, i.e. , 75% of all days the stock is below what value ?
In a poll, 51% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicted of murder?" The margin of error in the poll was 2%, and the estimate was made with 94% confidence. At least how many people were surveyed? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). The minimum number of surveyed people was (Round up to the nearest integer.)
According to a study conducted by an organization, the proportion of Americans who were afraid to fly in 2006 was 0.10. A raadom sample of 1,300 Americans results in 143 indicating that they are afraid to fly. Explain why this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Select the correct choice below and, if necessary, fill in the answer box to coreplete your choice. O A. This is not necessarily evidence that the proportion of Americans wbn are afraid to fly has incrensed above 0.10 because the value of np(1-p) is less than 10. O B. This is not necessarily evidence that the proportion of Americans who are afraid to fly hassnrGAsed above 0.10 because the saaple proopation, (Type an integer or a decimal.) is very close to 0.10. C. This is not necessarily evidence that the proportion of ArmTicans who…
The graph of the normal distribution resembles a "bell" curve. True SAMSUNG & False C $ % * 0
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The central limit theorem says that: lima to0 P[ < æ] = ® (x)
In a recent poll, 45% of survey respondents said that, if they only had one child, they would prefer the child to be a boy. Suppose you conducted a survey of 160 randomly selected students on your campus and find that 79 of them would prefer a boy. Complete parts (a) and (b) below. Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... (a) Use the normal approximation to the binomial to approximate the probability that, in a random sample of 160 students, at least 79 would prefer a boy, assuming the true percentage is 45%. The probability that at least 79 students would prefer a boy is 3636. (Round to four decimal places as needed.)

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