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The rent for a one-bedroom apartment in Southern California follows the normal distribution with a mean of $2,475 per month and a standard deviation of $290 per month. The distribution of the monthly costs does not follow the normal distribution. In fact, it is positively skewed. What is the probability of selecting a sample of 45 one-bedroom apartments and finding the mean to be at least $2,365 per month? (Round z value to 2 decimal places and final answer to 4 decimal places.)
In a shipment of 59 vials, only 18 does not have hairline cracks. 6 vials are randomly selected from the shipment. Find the probability that at least one of the 6 selected vials has a hairline crack.
The researcher in exercise decides to conduct the same study using a within - participates design to control for differences in cognitive ability.
a survey is to be made of the prevalence of the common disease in a large population. for any disease that affects
Determine the centerline and the upper and lower control limits for a 3-sigma mean control chart in which each sample consists of 4 cylinders
consider the following bivariate datapointabcdefghijx7405065257y7107170375a calculate the covariance. give your answer
Prepare an ANOVA table and test the null hypothesis of no linear relationship between the two variables.
country financials a financial services company uses surveys of adults age 18 and older to determine if personal
discovering statistics referring to the information from my first question as stated nielson media research reported
we know many types of data fall into a normal distribution with most of the observations falling towards the middle.
A central university has a student population of 60,000. The university is interested in determining what proportion of them is in favour of a new grading system.
A sample of 60 night shift workers showed that the mean number of units produced was 351. At the .05 significance level, is the number of units produced on the night shift larger?
at a track and field tournament freds long jumps vary evenly from 6.5 to 7.2 meters. let x be the length of freds long
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