Question 2 (1 point) Pinterest claims that 0.3038 of their app users are men In a...
Pinterest claims that 0.3038 of their app users are men. In a sample of 51 randomly chosen app users, what is the probability that greater than 11 of them will be men? Question 6 options: 1) 0.0496 2) 0.1097 3) 0.0248 4) 0.8903 5) 0.9399
Question 6 (1 point) Fill in the blanks. Pinterest claims that 0.27 of their app users are men. In a sample of 72 randomly chosen app users, around Assume each pick is independent. of them will be men, give or take 0 1) 19.44,14.20 2) 72,3.767 3) 19.44,0.27 )3.767,19.44 5) 19.44,3.767 4
Question 6 (2 points) A dating app allows users to swipe right to 'like' or left to pass when they view a person's dating profile. You want to estimate the overall "success rate for men from women viewing their dating profile. You randomly select 400 swipes where women viewed men's profiles and 68 of the 400 swipes were swiped right. The margin of error on your estimate is 3.7% at the 95% confidence level. What is the best-case estimate of...
Question 4 (1 point) A survey of 500 internet users found that the users were on line an average of 6.5 hours a week with a standard deviation of 2.3 hours. If 36 internet users are randomly selected, what is the probability that their average on line time will be between 6 and 6.8 hours?
Week#5: Question 1: A team of 10 members, 3 are men and 7 are women. A committee of 4 people will be chosen randomly. What is the probability that the committee will have atleast two men on it? Question 2: In this experiment, you flip a fair coin four times. Make a tree diagram of this experiment. What is the probability that out of four coin tosses, you get exactly two heads in a row?
Forbes reports that women trust recommendations from Pinterest gender? The following sample data shew the number of women and men who stated in a recent semple that they trust recommendations more than recommendations from any other social network platform (Forbes website, April 10, 2012 ). But, does trust in Pinterest difter by recommendations made on Pinterest Men 170 Trust Recommendations Made on Pinterest 117102 Women 150 Sample a. What is the point s the point estimate of the proportion of...
Question 4 of 4 (1 point) View problem in a pop-up Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 195, with a standard deviation of 34 (the units are milligrams per deciliter). A simple random sample of 103 adults is chosen. Use Table A.2 if needed Part 1 out of 3 What is the probability that the sample mean cholesterol level is greater than 200? The probability that the sample mean cholesterol level is greater than...
Question 1 (1 point) Apple's market share in the smart phone market represents a proportion of 0.1974. If Apple conducts a survey nationwide of 512 smart phone users, what is the probability that greater than 83 of the people are Apple users? 1) 0.9764 2) 0.0029 3) 0.0058 4) 0.0236 5) 0.9822
Question 1) Llantas Inc. claims that the average life of a certain tire is greater or equal than 25,000 miles under normal driving conditions (assume that the population is normally distributed). A random sample of 16 tires is tested. The mean of the sample is 24,000 miles and the standard deviation of the sample is 4,000 miles. What is the critical value? Use alpha = .05. Question 1 options: 1) -1.00 2) -1.753 3) -1.645 4) 1.753 Question 2 (5...
(1 point) An insurance company states that at least 85% of its claims are settled within 30 days. A consumer group selected a random sample of 66 of the company's claims to test this statement. They found that 55 of the claims were settled within 30 days. Does the consumer group have evidence to disbelieve the insurance company's claim? 1. Write the hypotheses to test if the rate of claims settled within 30 days is less than 85%. H0H0: The...