# Question: Refer to Exercise 10 78 Now answer the questions of parts

Refer to Exercise 10.78. Now answer the questions of parts (a) and (b) there without assuming that the standard deviations are the same for the two populations but under the following two situations.

a. Using the sample standard deviations given in Exercise 10.78.

b. Using sample standard deviations of $7.17 and $15.80 for families of four and families of five, respectively.

a. Using the sample standard deviations given in Exercise 10.78.

b. Using sample standard deviations of $7.17 and $15.80 for families of four and families of five, respectively.

**View Solution:**## Answer to relevant Questions

Repeat Exercise 10.79 assuming that the population standard deviations are not equal for the two groups, but considering the following two situations. a. Using the sample standard deviations given in Exercise 10.79. b. Using ...In a random sample of 800 men aged 25 to 35 years, 24% said they live with one or both parents. In another sample of 850 women of the same age group, 18% said that they live with one or both parents. a. Construct a 95% ...A new type of sleeping pill is tested against an older, standard pill. Two thousand insomniacs are randomly divided into two equal groups. The first group is given the old pill, and the second group receives the new pill. ...A sample of 20 alcoholic fathers showed that they spend an average of 2.3 hours per week playing with their children with a standard deviation of .54 hour. A sample of 25 nonalcoholic fathers gave a mean of 4.6 hours per ...A drug company is interested in investigating whether the color of their packaging has any impact on sales. To test this, they used five different colors (blue, green, orange, red, and yellow) for the boxes of an ...Post your question