According to a 2009 Reader's Digest article, people throw away approximately 90% of what they buy at the grocery store. Assume this is the true proportion, and you plan to randomly survey 100 grocery shoppers to investigate their behavior. What is the probability that the sample proportion exceeds 0.82? Round your answer to three decimal places. Hint: What are the mean and standard error of the sampling distribution of a proportion? I

Calculate the standard score (z-score) of the given sample mean. Round your answer to two decimal places. u = 23 and o = 7; n = 72; ī = 22

Number of persons in the household 1 2 A. Below is a distribution of the variable "hompop" from the 2016 General Social Survey dataset. This variable is a measure of the number of people in each respondent's household. Use the table to answer the following questions. 3 4 5 7 8 9 10 11 Total www Freq. 850 1,069 436 278 139 58 19 2,867 percent 29.65 37.29 15.21 9.70 4.85 2.02 0.66 0.31 0.24 0.03 0.03 100.00 Cum. 29.65 66.93 82.14 91.84 96.69 98.71 99.37 99.69 99.93 99.97 100.00 1

You roll 36 dice over and over. what is standard error of sampling distribution of x-bar (the mean)?

The proportion of Australian males that are colour-blind is 8.0 percent while the proportion of females is 0.4 percent. Calculate the odds ratio for males to females with respect to colour-blindness and comment.

A poll showed that 54.6% of Americans say they believe that statistics teachers know the true meaning of life. What is the probability (in percent form) of randomly selecting someone who does not believe that statistics teachers know the true meaning of life.

Suppose the true population proportion is p = 0.5. The figure below shows the distribution of the sample proportion (p) values for 3 different sample sizes, n = 20, n=100 and n=500. 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8

The histogram below gives the high temperatures for a simple random sample of May, June, and July days.  What percent of days are between 70 and 80 degrees?  Round your answer to the nearest percent.

​Recently, a random sample of 13–18 year olds was​ asked, "How much do you currently have in​ savings?" The data in the table represent the responses to the survey. Approximate the mean and standard deviation amount of savings.   LOADING... Click the icon to view the frequency distribution for the amount of savings. Savings Frequency   ​$0– ​$199 343 ​$200– ​$399 94 ​$400– ​$599 62 ​$600– ​$799 21 ​$800– ​$999 9 ​$1000– ​$1199 5 ​$1200– ​$1399 3 The sample mean amount of savings is ​$nothing. ​(Round to the nearest dollar as​ needed.) The sample standard deviation is ​$nothing. ​(Round to the nearest dollar as​ needed.)

Determine whether the statement describes a descriptive or inferential statistic. 59 % of all students at the local university eat out more than twice a week.