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The number of ants per acre in the forest is normally distributed with mean 43,000 and standard deviation 12,095. Let X = number of ants in a randomly selected acre of the forest. Round all answers to 4 decimal places where possible.
a. What is the distribution of X? X ~ N(
b. Find the probability that a randomly selected acre in the forest has fewer than 51, 400 ants.
c. Find the probability that a randomly selected acre has between 46,044 and 60,509 ants.
d. Find the first quartile. ants (round your answer to a whole number) Hint: Helpful videos: Find a Probability ) [+]. Finding a Value Given a Probability [) [+]
A study shows that employees that begin their work day at 9:00 a.m. vary their times of arrival uniformly from 8:40 a.m. to 9:30 a.m. The probability that a randomly chosen employee reports to work between 9:00 and 9:10 is?
Calculate the average length of stay, post-operative infection rates, and post-operative death rates for each month.
In 12,000 entries find the probability that no silent errors occur. Find the probability of at least one silent error.
(a) What is the probability that all eight dice show a 6? (b) What is the probability that all eight dice show the same number?
Describe a series of steps that could be used to write fractions like 3/4, 2/5, 5/6, 11/8, 3/10, 19/15, 7/20, 8/25, 9/40, or 17/50 in decimal form.
Conduct the most appropriate hypothesis test using a 0.05 significance level to determine if there is a statistically significant difference between the reading of both instruments.
Use the Capella library to locate one peer-reviewed journal article in your area of interest that uses interpretation of statistical analysis to study an issue
6,000 children in the experimental? group,73 developed the disease. Of 6,000 children in the control? group,119 developed the disease.
when we pick a point estimator whose sampling distribution is not centered on the population parameter being estimated
a) What is the level of significance? b) What is the value of the sample test statistic? (Round your answer to three decimal places.) c) Find the P-value. (Round your answer to four decimal places.)
Suppose divorce lawyers always assume a spouse has hidden cash of approximately $10,000. Is there any evidence to suggest that the mean amount of stashed cash is more than $10,000?
Consider the results of a survey where students were asked about their GPA and also to break down their typical 24-hour day into study, leisure.
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