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If I have a set of values(direct measurements of dynamic deformations of a road at 100m) between 3 and~1000, how can I calculate the 2 characteristical values wich limits the interval including 85,95% of all possible measurements on this road? Using stdev and t-Student, the lower value results negative if some values are too high(all values & results MUST be positives).
If the aberant values are the problem how to analyse the dataset to check wich values to reject?
Can the company conclude that the pill is effective at promoting weight loss? Write the hypotheses and conduct the appropriate hypothesis test.
what is the probability that a single fisherman's catch is less than 31.5 pounds? what is the probability that the sample of 30 fisherman's average catch is less than 31.5 pounds?
Construct the 90% confidence interval for the true population proportion of all voters in the state who favor approval.
Assuming we can verify that the data set is approximately normally distributed, what percentage of times will the server be down less than 24 minutes?
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
If there is a significant difference between proportions of females and males who plan to vote for the incumbent president. what is the p value of the test.
A person has purchased 5 of 1,000 tickets sold in a certain raffle. To determine the 10 prizewinners, 10 tickets are drawn at random and without replacement. compute the probability that he wins at least one prize.
A salesman must select 2 of the first component and 3 of the second to take on a sales call. How many different systems can the salesman select?
If the answer choices for each question are equally likely, find the probability of answering more than 4 questions correctly.
If she actually has 55% of the total vote, what is the probability of getting a sample proportion this small or smaller? Do you think she actually has 55% of the vote? Why or why not?
Scrap rates per thousand (parts whose defects cannot be reworked) are compared for 5 randomly selected days at three plants. Does the data prove a significant difference in mean scrap rates?
What is the relationship between the variance and the standard deviation?
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