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A processor of carrots cuts the green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test the weight of the boxes, a few were checked. The mean weight was 20.4 pounds, the standard deviation 0.5 pounds. How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
Find out the upper and lower bounds on average life expectancy of the Canadian women such that at least 90% of all population is included.
Compute the probability that randomly chosen student with a Master's degree majored in English or mathematics?
Drug sniffing dogs must be 95% accurate. A new dog is being tested and is right in 46 of 50 trials. Find a 95% confidence interval for the proportion of times the dog will be correct.
how many chocolate chip cookies will he need to sample to estimate the mean to within 2, what is a 99% confidence interval for the average number of chips per cookie?
Since she is allowed to reserve one time if her first serve is out what should her serving strategy be?
A normal distribution with a mean of 55 and a standard deviation of 6 is evaluated to solve a business problem.
The researchers planned to use simple linear regression to see if the age at which a baby was first able to crawl could be predicted from the average outdoor temperature six months after each baby's birthdate.
Find the probability that at least one subject experiences headaches. Is it unusual to have at least one of six subjects experience headaches?
Determine whether or not the mean waiting time of all customers is significantly more than 3 minutes.
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Find at least what percentage of all homeowners in this city pay a monthly mortgage of 865 to 1,675.00.
There were 25 subjects included in each of the combinations of gender and smoking status. One of the variables measured was the heart rate after six minutes of exercise. A two-way ANOVA is performed with the resulting ANOVA table given below
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