11. Find the area under the normal curve to the right of z - = -1.66
a. 0.9515
b. 0.9525
c. 0.0485
d. 0.0475

12. Find the area under the standard normal curve between z= 0 and z=3

a. 0.0010
b. 0.4987
c. 0.4641
d. 0.9987

13. Find the area under the standard normal curve between z =1 and z = 2.

a. 0.5398
b. 0.2139
c. 0.1359
d. 0.8413

14. For binomial distribution with n = 12 and p = 0.6 determine which statement is true
a. nq< 5
b. np > 5
c. cannot use normal distribution
d. all of the above

15. For the following conditions determine if it is appropriate to use the normal distribution to approximate a binomial distribution with n = 20 and q = 0.7

a. Mean > 5
b. standard deviation = 2.05
c. can use normal distribution
d. all of the above

16. Match the binomial probability P(x< 23) with the correct statement.

a. P(there are at most 23 successes)
b. P (there are at least 23 successes)
c. P (there are more than 23 successes)
d. P (there are at fewer 23 successes)

17. P (x > 23) is read as:
a. there are more than 23 successes)
b. P (there are at most 23 successes)
c. P (there are at least 23 successes)
d. P (there are more than 23 successes)

18. Ten percent of the population is left-handed. In a class of 100 students, write binomial probability for the statement "there are at most 12 left-handed students in the class"
a. P(x<12)
b. P(x<12)
c. P(x=12)
d. P (x>12)

19. Ten percent of the population is left-handed. A class of 100 students is selected. Convert the binomial probability (P(x<12) to a normal probability by using the correct for continuity.
a. P(x =11.5)
b. P(x < 12.5)
c. P (x <11.5)
d. P (x >12.5)

20. Find the probability that in 200 tosses of a fair six-sided die, a five will be obtained at most 40 times.

Exhibit 10-11
An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number of accidents they had in the previous year. The results are shown below.
Under Age of 18 Over Age of 18
n1 = 500

I need help with answering these 9 questions.
1) "ยต = 17" is an appropriate null hypothesis.
A.
True
B.
False
2) If the p-value is less than a in a two-tailed test, the null should be rejected.
A.
True
B.
False
3) A Type II error is committed when we reject a null hypothesis that is true.
A

If the mean and the standard deviation of a continuous random variable that is normally distributed are 20 and 5, respectively, find an interval that contains 68% of the distribution.
A. (18,24)
B. (15,25)
C. (12,25)
D. (10,30)
2. If the mean and the standard deviation of a continuous random variable that is normally d

Can I have a quick information of this ( file attached)
1. A frequency distribution can be shown as
? a statistic
? a histogram
? a scatter plot
? a stem and leaf plot
2. Simple statistics are
? for simpletons
? presented in stem and leaf plots
? things like correlations
? things like standard deviations

If you choose to solve these problems, please show the steps and formulas used.
1. A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. At = .05, what is

The marketing manager of a large supermarket chain would like to use shelf space to predict the sales of pet food. For a random sample of 12 similar stores, she gathered the following information regarding the shelf space, in feet, devoted to pet food and the weekly sales in hundreds of dollars. Use these data to answer questi

In a regression model involving 30 observations, the following estimated regression equation was obtained:
Y(hat) = 17 + 4X1 - 3X2 + 8X3 + 8X4
For this model SSR = 700 and SSE = 100.
The coefficient of determination for the above model is approximately
A. -0.875
B. 0.875
C. 0.125
D. 0.144
The c

True or False: The probability of Type I error is referred to as the significance level of the test.
True
False
A Type II error is defined as:
rejecting a true null hypothesis.
rejecting a false null hypothesis.
failing to reject a true null hypothesis.
f

Please see attached file and and answer the questions and include an explanation.
State insured uninsured unknown total
Nebraska 800,000 12,000 100 812,100
Arizona 2,000,000 800,000 1,000,000 3,800,000
Oregon 2,000,000 50,000 100,000 2,150,000
New York 8,000,000 2,000,000 5,000,000 15,000,000
total 12,800,000 2,862,000 6