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If two fair dice are rolled (six-sided) what is the probability that the sum of the numbers rolled will add up to seven?
Please show your work of getting the answer.
There are 6 children in a family. The number of children defines a population. The number of simple random samples of size 2 that are possible equals:
You randomly select 425 students and ask each one what the top motivation is for using a credit card. Can you conclude that there has been a chagne in the claimed or expected distribution? Use a =0.025.
When the rats In the sample reach 10 weeks old, each rat is weighed. The mean weight for this sample is M=974. Sketch the appropriate distribution, and locate the critical region for the alpha level =.05.
To be from the same population? You may assume the that follows a normal distribution. values are: 2.13 1.31 1.91 1.92 1.77 1.64 2.29 1.99 2.33 2.49 2.22
Use simple exponential smoothing with α = 0.33 to forecast battery sales for February through May. Assume that the forecast for January was for 22 set of tires.
Determine if there is a linear correlation between annual income and the amount of insurance? What is the linear regression line for this data?
What happens to the confidence interval and the power of the test at a particular point of interest
At the .01 significance level, is there a relationship between job pressure and age?
On average, you receive 2 telemarketing calls per day. What is the probability that you will not receive any telemarketing calls today.
Forecast quarterly demand where x = 0 in second quarter of last year. Quarterly seasonal factors are Q1=1.5, Q2=0.8, Q3=1.1, Q4=0.6. Determine the forecast for last quarter?
True mean number of years to retirement of its employees to within one month of the true mean and with 90% confidence if the range of the data is 7 years?
Three are selected, at random, without replacement from the batch. What is the probability that the third is not defective given that one of the previous two are defective?
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