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To develop a 90 percent confidence interval for the population mean.
Families USA, a monthly magazine that discusses issues related to health and health costs, surveyed 20 of its subscribers. It found that the annual health insurance premiums for a family with coverage through an employer averaged $10,979. The standard deviation of the sample was $1,000.
a. Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium.
b. How large a sample is needed to find the population mean within $250 at 99 percent confidence?
Write down a program having a procedure that draws a shape of your choice. The program must call the procedure 10 times in order to draw the shape at 10 random locations.
Prepare the journal entry to transfer the cost of job #JK150 out of the work-in-process account at the end of November, What was the under-or over recovered overhead for the year?
You have been asked to test whether data support company's claim? Test at α = 0.05. Suppose normality.
You would need the store manager's approval to do this, but you decide to get your co-workers on board first. Prepare a detailed agenda to send to the other meeting participants.
Construct and interpret 90 percent on confidence interval for the mean. Be sure to interpret the meaning of this interval.
Finding a simple random sample
Write down a script known as whichdaemon.sh that checks if the httpd and init daemons are running over your system. If an httpd is running.
Tavern has budget of $2,000 for beer for Super Bowl Sunday. Betty desires to find out number of gallons of each brand of beer to order so as to maximize profit. Create a linear programming model for this problem.
use the following sample data to test whether the GPA are different at the 0.05 level of significance.
Assume that at PVF, every product (explained by Product No., Description, and Cost) is composed of at least three elements (explained by Component No., Description, and Unit of Measure). Design an E-R diagram for this situation.
Inspect table produced in question 2 above. Comment on relative sensitivity of minimum sample size to actual proportion and to desired half width.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
A manufacturer of billiard balls is testing three additives to the basic plastic. Show the partial ANOVA table
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
The null hypothesis is that the distribution of mother's educational level is the same for both treatment groups. The value of the chi-square statistic is 7.422. Evaluate the P-value
The average number of days absent per student per year at West Valley School is 17 days with a standard deviation of 4 days. How many standard deviations from the mean is 6 absent days?
How much variability will you have if you predict sales with this model?
Form a frequency distribution and a percentage distribution that have class intervals with the upper class limits $99, $119, and so on.
Two types of flares are tested for their burning times (in minutes) and sample results are given below.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Probability that the entire batch will be rejected?
Calculate the population mean and compare it to the mean of the sampling distribution.
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