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21-28: Psychology Exam. The scores on a psychology exam were

21-28: Psychology Exam. The scores on a psychology exam were normally distributed with a mean of 67 and a standard deviation of 8. 21. About what percentage of scores were less than 59? 23. A failing … read more

Find the equation of the regression line for the given data.

Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. (The pair of variables have a significant correlation.) Then use … read more

Which of the following lists 3/6, 9/12, 15/18 in order from

Which of the following lists 3/6, 9/12, 15/18 in order from least to greatest? Choose the best answer from the options below: A 9/12 , 3/6 , 15/18 B 3/6, 9/12 , 15/18 C 9/12 , 15/18 , 3/6 D 15/18 , 9/… read more

Every Normal model is defined by its parameters, the men and

Every Normal model is defined by its parameters, the men and the standard deviation. For each model below, fond the missing parameter. (a) Mean=20, 25% above 30 sigma=? (b) mean=80, 20% below 40, sigm… read more

I have a couple of questions I need help with. Will tip 5 dollars A

I have a couple of questions I need help with. Will tip 5 dollars A submarine descended to a level 230 m below the surface of the ocean.Later it ascended 95 m and then dove 120 m what was the new dept… read more

for the polynomial, -4x^4+6x^3-2x^2+5x-2, complete the following

for the polynomial, -4x^4+6x^3-2x^2+5x-2, complete the following table. the tabel has 4 columns with 6 rows. first column is Term and below it is a blank square below that is 6x^3 below that is a blan… read more

Please compute the z score corresponding to each of the values

Please compute the z score corresponding to each of the values of x below. a. x= 39, s= 3, -x= 30 ( the - is above the x) b. x= 79, u= 78, o= 2 c.u=70, 0=5, x= 70 d. s=4, x=40, -x=50 E). In parts a-d,… read more

A statistical process controller should be concerned when the

A statistical process controller should be concerned when the control chart shows that ___________. a. two out of three consecutive points are in the outer one-third of the region between the centerli… read more

Which of the following is not cause for concern when monitoring

Which of the following is not cause for concern when monitoring a process using a process control chart? Four out of five values are above or below the centerline. a. Eight or more consecutive points … read more

A statistical process controller should be concerned when the

A statistical process controller should be concerned when the control chart shows that ___________. a. six consecutive points are above or below the centerline b. fewer than four out of five consecuti… read more

Question 1 1. Compute the range for the set of data. 12,

Question 1 1. Compute the range for the set of data. 12, 13, 14, 15, 16 Answer 4 12 0.8 16 Compute the range for the set of data. 13, 19, 13, 19, 13, 19, 13, 19 Answer 19 16 12 6 Compute the range for… read more

An object floats on water with 78% of its volume below the

An object floats on water with 78% of its volume below the surface. The same object when placed in another liquid floats on that liquid with 70% of its volume below the surface. Determine the density … read more

Scott A study compares length of time asleep for three different

Scott: A study compares length of time asleep for three different doses of a sleeping drug for men and for women. How many independent variables are there? a. one b. two c. three d. It is impossible t… read more

When 196 workers aged 18-25 were asked were asked how many

When 196 workers aged 18-25 were asked were asked how many hours they had worked the previous week, the mean was 37.8 with a SD of 13.3. Does this suggest that the population work week differs from 40… read more

1. Calculate the (1a) mean, (1b) median (1c)mode and

1. Calculate the (1a) mean, (1b) median (1c)mode and (1d) Standard Deviation for the data below. You may use full functions. The data in this problem is considered a population where N=10. Hint. Copy … read more

Suppose we have a population of scores with a mean ( ) of 200

Suppose we have a population of scores with a mean (µ) of 200 and a standard deviation (s) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would c… read more

Chi-square should not be used if ____. 1. fo is below

Chi-square should not be used if ____. 1. fo is below 5 2. fe is below 5 3. fe = fo 4. df = 1… read more

Suppose that the scores of architects on a particular creativity

Suppose that the scores of architects on a particular creativity test are normally distributed. What percentage of architects have Z scores (a) above .10, (b) below .10, (c) above .20, (d) below .20, … read more

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