please help - final is coming up soon, and the tutors here make these so much easier to understand math.

Question 11 (1 point) Medical Research Laboratories claims that at least 4 out of 10 patients experienced improvement from a new allergy treatment. A random sample of 220 patients showed that 101 of them experienced improvement from a new allergy treatment. Find the test statistic.

Question 11 options:

1.76

-1.79

1.79

-1.76

Question 12 (1 point) A produce packing company claims that the mean weight of a peach is at most 4.7 ounces. A random sample of 20 peaches results in a mean of 4.6 ounces and a standard deviation of 0.4 ounces. Find the test statistic. Assume that the weights of peaches are normally distributed.

Question 12 options:

-0.06

0.06

-1.12

1.12

Question 13 (1 point) A research group claims that the new hybrid vehicle does not get 48 miles per gallon. A random sample of 18 vehicles resulted in a mean of 47 miles per gallon and a standard deviation of 4 miles per gallon. Find the test statistic. Assume that the mileages are normally distributed.

Question 13 options:

1.06

0.06

-1.06

-0.06

Question 14 (1 point) A research group claims that the new hybrid vehicle does not get 48 miles per gallon. A random sample of 20 vehicles resulted in a mean of 50 miles per gallon. Find the test statistic if miles per gallon. Assume that the mileages are normally distributed.

Question 14 options:

2.24

0.11

-0.11

-2.24

Question 15 (1 point) The Tech Power Company claims that its cell phone battery has a mean life of 84.0 hours. A random sample of 24 batteries had a mean life of 82.0. Find the test statistic if hours. Assume that the battery lives are normally distributed.

Question 15 options:

0.06

-0.06

1.53

-1.53

Question 16 (1 point) A test of correlation is done on a sample with n = 18 and the linear correlation coefficient is found to be r = -0.516. Determine whether or not there is linear correlation. Use = 0.05.

Question 16 options:

There is positive linear correlation.

There is negative linear correlation.

There is no significant linear correlation.

Question 17 (1 point) A test of correlation is done on a sample with n = 11 and the linear correlation coefficient is found to be r = 0.468. Determine whether or not there is linear correlation. Use = 0.05.

Question 17 options:

There is no significant linear correlation.

There is positive linear correlation.

There is negative linear correlation.

Question 18 (1 point) A test of correlation is done on a sample with n = 18 and the linear correlation coefficient is found to be r = 0.401. Determine whether or not there is linear correlation. Use = 0.05.

Question 18 options:

There is positive linear correlation.

There is negative linear correlation.

There is no significant linear correlation.

Question 19 (1 point) A test of correlation is done on a sample with n = 12 and the linear correlation coefficient is found to be r = 0.694. The values of x have a minimum of 11.9 and a maximum of 25.6. The regression equation is ^y=19.2+1.4x

The average of the dependent variable is

_

y = 41.9

Find the best estimate of the dependent variable for x=21.8. Use cx = 0.05.

Question 19 options:

41.9

There is not enough information given.

49.7

Question 20 (1 point) A test of correlation is done on a sample with n = 12 and the linear correlation coefficient is found to be r = 0.429. The values of x have a minimum of 11.9 and a maximum of 25.6. The regression equation is ^y=19.2+1.4x The average of the dependent variable is

The average of the dependent variable is

_

y = 41.9

Find the best estimate of the dependent variable for x=21.8. Use = 0.05.

Question 20 options:

There is not enough information given.

49.7

41.9