please help - the final is coming up soon and I always understand it so much more from the tutors here

Question 1 (1 point) Airzone Wireless claims that the unavailability of its network is not 11%. Find the critical value(s) for a hypothesis test at the 0.04 level of significance.

Question 1 options:

1.75

2.05

1.75

2.05

Question 2 (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 critical value(s) for a hypothesis test at the 0.01 level of significance.

Question 2 options:

2.528

2.33

2.539

2.861

Question 3 (1 point) An efficiency specialist claims the mean wait time for the drive-through window at Burger Palace is less than 48 seconds. A random sample of 25 customers had a mean wait time of 43 seconds with a standard deviation of 11 seconds. Find the critical value(s) for a hypothesis test at the 0.10 level of significance.

Question 3 options:

-1.28

-1.318

-1.316

-1.711

Question 4 (1 point) A restaurant manager claims the mean dinner bill for 4 people is no more than $66.80. A random sample of 20 dinner bills for 4 people had a mean of $73.20. Previous studies showed that =$12.90. Find the critical value(s) for a hypothesis test at the 0.05 level of significance.

Question 4 options:

1.645

-1.645

1.96

-1.96

Question 5 (1 point) A certain college claims that its incoming students have a mean placement test score of at least 74.0. A random sample of 25 students has a mean score of 76.0. Previous studies showed that =5.0. Find the critical value(s) for a hypothesis test at the 0.05 level of significance.

Question 5 options:

1.645

-1.645

1.96

-1.96

Question 6 (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 critical value(s) for a hypothesis test at the 0.01 level of significance.

Question 6 options:

2.878

2.567

2.575

2.898

Question 7 (1 point) The Tech Power Company claims that its cell phone battery has a mean life of 84.0 hours. A random sample of 30 batteries had a mean life of 89.0 hours and a standard deviation of 7.0 hours. Find the critical value(s) for a hypothesis test at the 0.10 level of significance.

Question 7 options:

1.699

1.645

1.311

1.697

Question 8 (1 point) Batteries Incorporated claims that the proportion of defective cell phone batteries is not 16%. A random sample of 160 batteries showed that 20 were defective. Find the value of the test statistic.

Question 8 options:

-1.21

-1.34

1.34

1.21

Question 9 (1 point) Batteries Incorporated claims that the proportion of defective cell phone batteries is not 5%. A random sample of 160 batteries showed that 12 were defective. Find the value of the test statistic.

Question 9 options:

-1.45

1.20

1.45

-1.20

Question 10 (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 210 patients showed that 71 of them experienced improvement from a new allergy treatment. Find the test statistic.

Question 10 options:

-1.90

1.83

1.90

-1.83