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At the beginning of the course of Statistical Methods I, the instructor recommended that students devote 3 hours per week for the duration of the 13-week semester, for a total of 39 hours. It is known that the time spent on studying statistics follow a normal distribution. Throughout the course duration, students were claiming that they were following the instructor's recommendation. At the course completion, a random sample of 10 students enrolled in the course was drawn where each student was asked how many hours he or she spent doing homework in statistics. The data are listed below:
45
38
37
40
44
46
42
43
If the same sample results had been obtained from a random sample of 16 students, could the students' claim be accepted at a lower level of significance?
Describe the optimal solution to a linear programming problem. comprise the following constraints from a two -variable linear program.
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
At 5% level of significance, is there evidence of difference in mean life of bulbs made by the 2 kinds of machines. What is your conclusion?
At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.
If we want to estimate the populations mean travel-to-work time San Francisco residents with a margin of error of 1 minute, what sample size should be used? Assume 95 percent confidence.
Does the data prove a significant difference in mean times?
What is the null and alternative hypothesis? What is your final conclusion?
To findout the point estimate of the difference among population mean. Elucidate the percentage increase in the number of days on the disabled list.
The first step in this assignment is to provide SPSS with the Value Labels for the values in LOCALE97.
How many ways can she choose 4 dissimilar rides if order does not matter? If she has chosen the first weeks rides, how many ways can she choose four more different rides for second week? Suppose that order does not matter.
Determine the expected shape of distribution of sample mean? Compute the likelihood of choosing a sample with mean of at least $112,000?
Establish an approximate design to MTBF required for a system that will result in an approximate minimum total cost over a five year period if the system is to be operated 7500 hours per year
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