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A hydraulic press breaks down at the rate of 0.1742 time per day.
a. What is the MTBF?
b. On a given day, what is the probability that it will break down?
c. If four days have passed without a breakdown, what is the probability that it will break down on the fifth day?
d. What is the probability that five consecutive days will pass without any breakdown?
you work for the bc lottery corp. your boss asks you for an estimate of the percent of british columbians who have
Which of the variables below do you think will be roughly normally distributed? Please select all that apply.
Discuss the career you chose in detail and use statistics to support any claims you make about the career. The goal is to create a paper that helpfully summarizes the career choice and would give a reader an informed perceptive on it.
Which of the following descriptions of confidence intervals is correct? (Select all that apply). When conducting a hypothesis test, which one of the following p-values would you feel most confident to reject the null hypothesis
Why would it be important to determine if the researchers assigned the women participating in the study at random to one of the two groups? Explain why you think that the researchers included a control group in this study.
Stats Questions Set. Which of the following statements correctly compares the t -statistic to the z -score when creating a confidence interval?
a company has 1300 items. in a sample of 120 items the historical cost of each item was compared with the audited value
Find the value of x. (Give your answers correct to one decimal place.) Find the value of x that corresponds to each of these standard scores z = -1.26.
What is an index number as relates to time series analysis? In a regression of a time series that states data as a function of calendar year, what requirement of regression is violated?
Between 2 and 4 PM on Wednesday, patient insurance inquiries arrive at Blue Choice insurance with a mean rate of 2.6 calls per minute. What is the probability of waiting more than 1.5 minutes to get the next inquiry call?
what is the standard error of a sampling distribution when ? sigma 24 and n 144?a 20 b .167 c 2.0 d unable to
If member of sales force submits the entertainment expense (dinner cost for four) of $190, must this expense be considered unusually high. Calculate and interpret z- score for each of six entertainment expenses.
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