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Suppose the covariance between Y and X is 0.03 and that the variance of Y is 0.04 and the variance of X is 0.12. The sample size is 30. Using a 5% level of significance, which of the following is most accurate? The null hypothesis of:
A) significant correlation is rejected.
B) no correlation is rejected.
C) no correlation is not rejected.
question an insurance company expects 10 of its policyholders to collect claims of 400 this year and the remaining 90
Would you agree with this claim if the random sample showed an average of 23,500 km and a standard deviation of 3,900 km? Use 0.01 level of significance.
if a group of 4 were randomly selected from a group of 6 people 3 female3 males what is the probability the selected
A mean of 45 months and a standard deviation of 8 months. if a random sample of 600 batteries is selected, how many batteries would weigh last more than 48 months?
the standard error of the sample mean is equal to 5 when n25. if the sample size increases by a factor of four how
The historical reports from two major networks showed that the mean number of commercials aired during prime time was equal for both networks last year.
1.which of the following would have a binomial distribution?a.a couple will have children until they have three girls
the density function of the time z in minutes between calls to an electrical supply store is given byfz 110e-z
Basic Statistics problem
1.a manufacturer of infant formula is running an experiment using the standard control formula and two new formulas a
It is suspected that high pollution levels (measured by number of particulates found in the air) increase the levels of asthma attacks. A researcher collects data on50 people who experienced an asthma attack during the course of one year.
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
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