Many students face the problems when they start studying the Statistics and Probability subject. Trying to understand a lot of different aspects they feel stressed and that doesn’t have a beneficial effect on their health. Students have a great deal of statistics and probability questions that they puzzle over every day. Our service will provide every client with the statistics and probability answers. We promise to do our best to help you solve your statistics and probability problems, just let us know your problem and you will get the best statistics and probability answers ever!
Ask Your question
Need a fast expert's response?Submit order
and get a quick answer at the best price
for any assignment or question with DETAILED EXPLANATIONS!
Search & Filtering
Q2: According to a survey by the Administrative Management Society, one-half of U.S. companies give employees 4 weeks of vacation after they have been with the company for 15 years. Find the probability that among 6 companies surveyed at random, the number that give employees 4 weeks of vacation after 15 years of employment is (a) anywhere from 2 to 5; (b) fewer than 3.
Carry your intermediate computations to at least four decimal places, and round your answer to at least two decimal places.
Provide a 90% confidence interval estimate of the population variance (to 1 decimal).
Season no of days Daily demand Avarage cost per occupied room per day
Peak Season 210 700 100
Noram Season 130 600 85
Slack Season 90 500 65
An Italian Ice (snowcone) retailer is examining his profits for the spring season of the previous year. He realizes that his sales are based on the daily weather: sunny, average, or cold. He estimates that this year the probability of it being sunny is 0.2, average 0.5, and cold 0.3. His gross sales on these three types of days average $50, $35, and $10 respectively.
a. Find the expected income in any one day.
b. If the average supplies cost $18, what is the expected daily profit?
Age group Never Former Current
10-15 35 62 95
16-20 120 73 107
20-25 90 60 63
26-30 109 77 134
30-35 82 52 140
36-40 40 115 103
Above 40 68 82 158
Using the above data can we conclude that there is a difference among population residual means at 5% level of significance in terms of smoking history?
(i) Draw a tree diagram to illustrate the above event.
(ii) Calculate the probability that at least one person passes the test.