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 356 of 900 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 twenty years ago? Use the a = 0.1 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) =[ 10, the sample size is satisfied. 5% of the population size, and the sample the requirements for testing the hypothesis (Round to one decimal place as needed.)

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 height of women ages 20-29 is normally distributed, with a mean of 64.9 inches. Assume a = 2.5 inches. Are you more likely to randomly select 1 woman with a height less than 65.8 inches or are you more likely to select a sample of 29 women with a mean height less than 65.8 inches? Explain. E Click the icon to view page 1 of the standard normal table. E Click the icon to view page 2 of the standard normal table, What is the probability of randomly selecting 1 woman with a height less than 65.8 inches? O (Round to four decimal places as needed.)

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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 of 700 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 twenty years 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 is B. Za/2= ± OB. C Zo = (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…

In a survey conducted by a reputable marketing agency, 241 of 1000 adults 19 years of age or older confessed to bringing and using their cell phone every trip to the bathroom (confessions included texting and answering phone calls). Complete parts (a) through (f) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the sample in this study? What is the population of interest? Determine the sample in this study. Select the correct choice below and, if necessary, fill in the answer box within your choice. O A. The sample is all adults with a cell phone. O B. The sample is all adults 19 years of age or older. O C. The sample is the adults 19 years of age or older. (Type a whole number.) O D. The sample is all adults.

In a survey, 39% of the respondents stated that they talk to their pets on the telephone. A veterinarian believed this result to be too high, so she randomly selected 160 pet owners and discovered that 56 of them spoke to their pet on the telephone. Does the veterinarian have a right to be skeptical? Use the a = 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) =U V10, the sample size is V 5% of the population size, and the sample the requirements for testing the hypothesis satisfied, (Round to one decimal place as needed.) What are the null and alternative hypotheses? V versus H,: (Type integers or decimals. Do not round.) Но Determine the test statistic, zo Zo = |(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…

In a survey, 34% of the respondents stated that they talk to their pets on the telephone. A veterinarian believed this result to be too high, so he randomly selected 210 pet owners and discovered that 70 of them spoke to their pet on the telephone. Does the veterinarian have a right to be skeptical? Use the a = 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): V 10, the sample size is V 5% of the population size, and the sample the requirements for testing the hypothesis satisfied. (Round to one decimal place as needed.) What are the null and alternative hypotheses? versus H: Ho: (Type integers or decimals. Do not round.) Determine the test statistic, Zo Z0 = (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…

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.)

a. (True or False) The weekly consumption of favorite beverages from this survey hasapproximately a normal distribution, explain your decision. b. Based on the histogram, which one is greater: mean or median? Explain why.c. Which summary statistic would be a better representation of the center for this sample:mean or median?