Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 148 subjects with positive test results, there are 21 false positive results. Among 155 negative results, there are 3 false negative results. Complete parts (a) through (c).  a. How many subjects were included in the study? The total number of subjects in the study was . b. How many subjects did not use marijuana? A total of subjects did not use marijuana. c. What is the probability that a randomly selected subject did not use marijuana? The probability that a randomly selected subject did not use marijuana is . (Do not round until the final answer. Then round to three decimal places as needed.)

A recent study has shown that approximately 31.6% of Canadians are considered 'supertasters,' or people who experience the sense of taste with greater intensity than average. Consider a sample of 23 Canadians, each of whom are asked to indicate if they are a supertaster or not. Please use this information to answer the following questions.a. How many of the Canadians sampled can we expect to be supertasters?Answer:_______people. Round to at least FOUR digits after the decimal if necessary. b. What is the standard deviation of the number of people sampled who are supertasters?Answer:______people. Round to at least FOUR digits after the decimal if necessary.

31) A Texas survey wanted to see if only a minority of teenagers supported Gay Marriage.Suppose 120 teenagers were interviewed and 53 of them supported Gay Marriage. What is the value of the test statistic?A. -1.278B. -1.287C. 9.743D. 9.676E. None of the above.

Twelve husbands were asked how much housework they completed last week and how many children were in the home. Use the following data to complete the questions in this section. State the null hypothesis and alternative hypothesis Children Husband’s Housework   Children Husband’s Housework 2 4   4 6 1 1   1 3 3 0   3 5 5 4   2 3 1 5   2 1 5 7   4 3

A businesswoman is considering whether to open a coffee shop in a local shopping center. Before making this decision, she wants to know how much money people spend per week at coffee shops in that area. She took a random sample of 26 customers from the area who visit coffee shops and asked them to record the amount of money (in dollars) they would spend during the next week at coffee shops. At the end of the week, she obtained the following data (in dollars) from these 26 customers: 16.69 38.73 15.26 14.38 4.99 63.81 10.25 13.15 32.22 36.06 16.30 65.99 10.21 37.08 3.26 6.83 34.56 6.34 36.42 27.69 38.54 13.17 9.75 9.35 1.13 5.27   Assume that the distribution of weekly expenditures at coffee shops by all customers who visit coffee shops in this area is approximately normal. Round your answers to cents.a. What is the point estimate of the corresponding population mean?x ¯ = $Enter your answer; point estimate b. Make a 90 % confidence interval for the average amount of money…

What is the variable of interest? Whether or not a patient is satisfied with the level of care. Whether or not all the patients like the doctor. The sample proportion of patients satisfied with the service Whether or not a patient likes the doctor. The number of patients that are satisfied with the servise

Steele Electronics Inc. sells expensive brands of stereo equipment in several shopping malls. The marketing research department of Steele reports that 33% of the customers entering the store that indicate they are browsing will, in the end, make a purchase. Let the last 23 customers who enter the store be a sample. a. How many of these customers would you expect to make a purchase? (Round the final answer to the nearest whole number.) Number of customer......... b. What is the probability that exactly five of these customers make a purchase? (Round the final answer to 4 decimal places.) c. What is the probability 13 or more make a purchase? (Round the final answer to 4 decimal places.) d. Does it seem likely at least one will make a purchase ("likely" refers if the probability is more than 70%)? Yes or No

11/12 cont.

You and your little sister decide to play a game of "ABC cup hunt". You take 26 cups and label each with a letter from A to Z. You place all of the cups upside down on a table but under one of the cups you place a chocolate frog. You know where the chocolate is but your sister does not. You ask your sister to choose the cup under which she thinks there is a frog. stal median hourly earnings by sex as reported by the Australian Bureau of statistics, cteristics of Employment, Australia, August 2021. 1 (a) What are the odds against your sister selecting the cup with the chocolate frog hidden underneath it? Your sister chooses a cup but you do not reveal what is underneath. Instead you overturn 24 other cups under which you know there is no frog. You then ask your sister if she wants to look under the cup she originally chose or if instead she would like to choose the final cup that remains upside down. She chooses to alter her choice and thus chooses to look under the other cup that…

Scott surveyed 40 friends on Facebook and asked them where they were born and where they went to college. He then categorized the data by whether they were born in Arizona (or not) and whether they went to college in Arizona (or not). The data are below. 21 people were born in Arizona 17 people went to college in Arizona 9 people were born in Arizona and went (or go) to college in Arizona a) How many people were born in Arizona and did not go to college in Arizona? b) How many people did not go to college in Arizona? c) How many people were neither born in Arizona nor went to college in Arizona?