test. It was found that 80 of them scored higher than 100. Based on this, compute a 95% confidence interval for the proportion of all adults whose IQ score is greater than 100. Then find the lower limit and upper limit of the 95% confidence interval. Round your answers to two decimal places.

Out of 500 people sampled, 95 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to three places

Mark each statement TRUE or FALSE. For these problems, assume that to estimate average time spent waiting at a restaurant, you sample 10 people and you get a 95% confidence interval of (5, 7) in minutes.   If you increase sample size, the width of your confidence interval increases.  If you increase confidence level, the width of your confidence interval increases.

Does the new training program appear to be more effective than the older training program in lowering the weight of its new prospects?

In a survey of 2269 ​adults, 701 say they believe in UFOs.   Construct a 95% confidence interval for the population proportion of adults who believe in UFOs.       A 95​% confidence interval for the population proportion is ​(nothing​,nothing​). ​(Round to three decimal places as​ needed.) Interpret your results. Choose the correct answer below.     A. With 95​% ​confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.   B. The endpoints of the given confidence interval shows that 95​% of adults believe in UFOs.   C. With 95​% ​confidence, it can be said that the sample proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.   D. With 95​% ​probability, the population proportion of adults who do not believe in UFOs is between the endpoints of the given confidence interval.

In a survey of 2295 ​adults, 746 say they believe in UFOs.   Construct a 90% confidence interval for the population proportion of adults who believe in UFOs.       A 90​% confidence interval for the population proportion is ​(nothing​,nothing​). ​(Round to three decimal places as​ needed.) Interpret your results. Choose the correct answer below.     A. With 90​% ​confidence, it can be said that the sample proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.   B. The endpoints of the given confidence interval shows that 90​% of adults believe in UFOs.   C. With 90​% ​confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.   D. With 90​% ​probability, the population proportion of adults who do not believe in UFOs is between the endpoints of the given confidence interval.

researcher would like to examine the effect of fertilizer on flower growth. She obtains several flowers. She randomly assigns half the plants to the no fertilizer condition. The other half of the plants receive fertilizer. She monitors their growth for a month. She then compares the amount of growth of the two sets of plants. Is there a difference in growth between the no fertilizer and the fertilizer conditions? Use the .05 level of significance. In addition, find Cohen’s d and state what the effect size is in a sentence. Growth Rating No Fertilizer 40,21,27,30, 47 Fertilizer 46,25, 24, 38, 53

The first pic is the question. Since the tutors are answering incorrectly more often, the second pic is an “example question”

In one city, 27.8% of the 9000 students surveyed said they eat at the school cafeteria. Find the 95% confidence interval for the proportion of students that said they eat at the school cafeteria. Give answer as a percent rounded to one decimal place.

Out of 200 people sampled, 50 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to three places