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1. Computer abuse by employees is an ongoing worry to businesses. A study revealed the data shown below. At α = .01, is the frequency of disciplinary action independent of the abuser's level of privilege?
Computer Abuse Incidents Cross-Tabulated by Punishment and Privilege
(a) Calculate the Chi-square test statistic, degrees of freedom and the p-value.
(b) Find the critical value for Chi-Square. Refer to the chi-square table.
2. In a three-digit lottery, each of the three digits is supposed to have the same probability of occurrence (counting initial blanks as zeros, e.g., 32 is treated as 032). The table shows the frequency of occurrence of each digit for 90 consecutive daily three-digit drawings.
Digits in 3-Digit Lottery Numbers on 90 Days
Calculate the Chi-square test statistic, degrees of freedom and the p-value.
After a bumper crop, a mushroom grower hypothesizes that mushrooms will remain at the average wholesale price of $1 per pound. State the null hypothesis and the alternative hypothesis.
Determine the probability that the student is Male. Do the same for student attending a Private high school. Use proper event notation remember that A is Female and B is Public - Calculate the probability that at least either the student is Female ..
Is this experiment collectively exhaustive? Explain.
A bulb is selected at random from the storage room and tested.Find the probability that the bulb was produced by machine C given that it was still operating after 16 days.
for each of the variables below state what level of measurement it is and is it discrete or continuousexample height-ir
the survey of study habits and attitudes ssha is a psychological test that measures students study habits and attitude
When using dummy variables in a regression equation to model a qualitative or categorical variable, the number of dummy variables should equal to
You observe the gender of the next 950 babies born at a local hospital. The random variable represents tha number of girls. historically , 49.8% of the babies born are girls?
With a sample standard deviation of 33 miles. At the 0.05 level of significance is there a difference in the mean number of miles traveled between the two groups?
A standard I.Q. test produces normally distributed results with a mean of 100 and a standard deviation of 15. If an average I.Q. is defined to be any I.Q. between 90 and 109, find the probability of randomly selecting an I.Q. which is average.
If we wanted to shorten the interval of the estimation of the true mean of Saturday sales to a width of $600 in total, what should the size of our sample be to achieve it?
I hypothesized that girls in my class have the same blood pressure levels as boys. The probability value for my null hypothesis was 0.15. So I conclude that the blood pressures of the girls were higher than boys'. Which kind of mistake did I make?
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