A researcher examined gross job gains and losses as a percentage of the average of previous and current employment figures. A simple random sample of 20 quarters provided the net percentage gains?(losses are negative?gains) for jobs as shown in the accompanying table. Complete parts?(a) through?(d) below.

I only help with one question

a. Decide?whether, on?average, the net percentage gain for jobs exceeds 0.2. Assume a population standard deviation of 0.49. Apply the?one-mean z-test with a 1?% significance level.

State the hypotheses for the?one-mean z-test.

H0?:?=0.2 Ha ?:?>0.2

The p value is

P (Z > 0.91) =0.1814

determine P-value is 0.181

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c. Remove the outliers?(if any) from the data and then repeat part?(a).

Identify the potential outliers. Choose the correct answer below and fill in the answer?box, if?necessary, to complete your choice.

A.The potential?outlier(s) is(are)

?

(Type an integer or a decimal. Do not round. Use a comma to separate answers as?needed.)

B . There are no potential outliers in the data

O A. O B. O C. D O Frequency Frequency Frequency Frequency 0 2 0 0 Job gains (%) Job gains (9%) Job gains (9%) Job gains (%) Choose the correct stem-and-leaf diagram below. XA. O C. O D. -1/2 N 244212233 -0 4 421 -0 4466677 -0223 3 4 4 6 14 42 -0 7 78 0 6 67 77 0 1 223344 62 3 34444 0 78 666777789 16 6 677 7 789 0 c. Remove the outliers (if any) from the data and then repeat part (a). BE On-Screen Keyboard Identify the potential outliers. Choose the correct answer below and fill in the answer box, if necessary, to complete your choice. O A. The potential outlier(s) is(are). ESC 8 9 10 X Home Pgu (Type an integer or a decimal. Do not round. Use a comma to separate answers as needed.) Tab De qwer yu op End O B. There are no potential outliers in the data. Pgl Caps asdf gh jkl Enter Insert Pau Click to select and enter your answer(s) and then click Check Answer. Shift ShiftA researcher examined gross job gains and losses as a percentage of the average of previous and current employment figures. A simple random sample of 20 quarters provided the net percentage gains (losses are negative gains) for jobs as shown in the accompanying table. Complete parts (a) through (d) below. Click here to view the net percentage job gain data. a. Decide whether, on average, the net percentage gain for jobs exceeds 0.2. Assume a population standard deviation of 0.49. Apply the one-mean z-test with a 1% significance level. State the hypotheses for the one-mean z-test. Ho: H = 0.2% Ha: H > 0.2 % (Type integers or decimals. Do not round.) Compute the value of the test statistic. Z= 0.91 (Round to two decimal places as needed.) Determine the P-value. P = 0.181 (Round to three decimal places as needed.) Do not reject the null hypothesis. At the 1% significance level, the data do not provide sufficient evidence to conclude that the mean net percentage gain for jobs is more than 0.2% per quarter. b. Obtain a normal probability plot, boxplot, histogram, and stem-and-leaf diagram of the data. Choose the correct normal probability plot below. A. O B. O C. OD. 37 On-Screen Keyboard X Normal score Normal score Normal score NT -1 0 NT -1 1 2 Job gains (%) Job gains (9%) ESC 8 x Home PgUp Nav b gains (%)