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?
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Pinterest claims that 0.3038 of their app users are men. In a sample of 51 randomly...
Question 2 (1 point) 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? 1) 0.0248 2) 0.0496 3) 0.9399 4) 0.8903 5) 0.1097
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
Assume that when adults with smartphones are randomly selected, 51% use them in meetings or classes. If 10 adult smartphone users are randomly selected, find the probability that fewer than 4 of them use their smartphones in meetings or classes.
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...
Assume that when adults with smartphones are randomly selected, 51% use them in meetings or classes. If 6 adult smartphone users are randomly selected, find the probability that at least 3 of them use their smartphones in meetings or classes. The probability is _____ (Round to four decimal places as needed.)
QUESTION There are 1000 employees in a firm, 51% are female. A sample of 33 employees is selected randomly. Compute the standard error of the sample proportion. 10 points QUESTION There are 1000 employees in a firm, 45% are female. A sample of 25 employees is selected randomly. What is the probability that the sample proportion of females is less than 55%? 10 points QUESTION There are 1000 employees in a firm, 45% are female. A sample of 25 employees...
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...
Energetic Co., a battery manufacturer, claims their battery lasts for 61.51 months with a standard deviation of 9.112 months. You randomly sample 24 of these batteries. Assuming the distribution for the battery lifetime is approximately normal, what is the probability the average lifetime is less than 59.44? Question 9 options: 1) 0.8671 2) 0.4101 3) 0.1155 4) 0.5899 5) 0.1329
A sample proportion is calculated from a sample size of 418. How large of a sample would we need in order to decrease the standard error by a factor of 4? Question 3 options: 1) 12,958 2) 7,106 3) 836 4) 6,688 5) 1,672 Question 4 (1 point) Historically, 71.15% of packages delivered by UPS are on time. Suppose 121 deliveries are randomly selected for quality control. What is the probability that greater than 74.74% of the deliveries were on...
A USA Today article claims that the proportion of people who believe global warming is a serious issue is 0.78, but given the number of people you've talked to about this same issue, you believe it is greater than 0.78. The hypotheses for this test are Null Hypothesis: p ≤ 0.78, Alternative Hypothesis: p > 0.78. If you randomly sample 28 people and 22 of them believe that global warming is a serious issue, what is your test statistic and...