According to a poll, 83% of California adults (420 out of 506 surveyed) feel that education is one of the top issues facing California. We wish to construct a 90% confidence interval for the true proportion of California adults who feel that education is one of the top issues facing California. What is a point estimate for the true population proportion?

A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean exam score on the previous three tests. She then asked them to rate how likely they were to cheat on an exam if the opportunity presented itself with a very limited chance for consequences. The students rated their desire to cheat on a scale ranging from 1-100, with lower numbers indicating less desire to cheat.   Before opening the data, what would you hypothesize about this research question?   Open the data set. Before running any statistical analyses, glance through the data. Do you think that your hypothesis will be supported?   Conduct descriptive analyses and report them here.   Conduct a one-way ANOVA. Report your statistical findings (including any applicable tables in APA format) here.   What would you conclude from this analysis? What would be your next steps, if this…

What is the effect on a confidence interval if one decreases both sample size and the level of confidence?

According to a telephone survey of adults, 86% of homeowners said that owning a home was a good investment, this survey included 1450 homeowners. 1. Construct a 99% confidence interval for the corresponding population proportion.  2. Construct a 97% confidence interval for the corresponding population proportion.

36. Flights on time 2016 revisited Will your flight get you to your destination on time? The Bureau of Transportation Statis- tics reported the percentage of flights that were delayed each month from 1994 through June of 2016. Here's a histogram, along with some summary statistics: 50 n270 19.696 s 4.214 40 30 20 %23 10 10 15 20 25 30 Delayed % We can consider these data to be a representative sample of all months. There is no evidence of a time trend (r 0,07). a) Check the assumptions and conditions for inference about the mean. # of Months

In a survey of 3116 adults aged 57 through 85​ years, it was found that 86.2​% of them used at least one prescription medication. Complete parts​ (a) through​ (c) below. a. How many of the 3116 subjects used at least one prescription​ medication? b. Construct a​ 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. c. What do the results tell us about the proportion of college students who use at least one prescription​ medication?     A. The results tell us that there is a​ 90% probability that the true proportion of college students who use at least one prescription medication is in the interval found in part​ (b).   B. The results tell us​ that, with​ 90% confidence, the probability that a college student uses at least one prescription medication is in the interval found in part​ (b).   C. The results tell us​ that, with​ 90% confidence, the true proportion of college students who use at…

According to a Field Poll, 79% of California adults (actual results are 400 out of 506 surveyed) feel that "education in our schools" is one of the top issues facing California.  We wish to construct a 90% confidence interval for the true population proportion of California adults who feel education and the schools is one of the top issues facing California.  A point estimate for the true population proportion is: choices given listed below 1.27 .79 506 ,90 .05 .10 400

You want to construct a 99% confidence interval for the proportion of retail stores that went out of business due to the recent pandemic. You managed to collect a random sample of 93 retail stores and found 15% of them shut down permanently. Construct and interpret the confidence interval.

According to a survey conducted by Pew Research Center in June 2009, 44% of people aged 18 to 29 years said that religion is very important to them. Suppose this result is based on a sample of 1000 people aged 18 to 29 years. (a) (b) What is the point estimate of the corresponding population proportion? Find, with a 99% confidence level, the percentage of all people aged 18 to 29 years who will say that religion is very important to them. What is the margin of error of this estimate?

b. In the year 2000, a survey of 1171 U.S. adults were asked who they felt was the greatest President. Of those surveyed, 397 reported that Abraham Lincoln was the greatest President. Use this data to construct a 99% confidence interval for the population proportion of all U.S. adults who would say that Abraham Lincoln was the greatest president before the year 2000. Answer using decimals and round to four decimal places