Question

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. Click here to view the net percentage jcb gain data the table of areas under the standard normal curve. a. Decide whether, on average, the net percentage gain for jobs exceeds 0.2 Assume a population standard deviation of 0.44. Apply the one mean z test with a 10% significance level. State the hypotheses for the one-mean z-test Type integers or decimals. Do not round.) Compute the value of the test statistic Round to two decimal places as needed.)
sample of 26 quarters A researcher examined gross job gains and losses as a percentage of the average of previous and current employment figures. A simple random 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. Click here to view Page 1 of the table of areas under the standard normal curve a. Decide whether, on average, the net percentage gain for jobs exceeds 0.2 Assume a population standard deviation of 044 Apply the one-mean z est win a 10% significance level. State the hypotheses for the one-me Net Percentage Job Gains (Type integers or decimals. Don the value of the sest stais 01 08 8 08 08 0.3 -04 03 04 6 Compute the value of the test statisti 0.4 0.6 0.6 0.414 0.5 0.9 0.7 0.2 0.4 Round to two decimal places as nee Print Done
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Answer #1

=044 The nudl & adtenatve hypothesis is Hal. ,U= 2./. The test stahistic is Fiven b [In 20 JL= 5-9 0-2-35 2 0 Z 0.2g5-0.2 0-4Z = 0.97

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