Question

88% of workers indicate that they are mildly dissatisfied with their job. A researcher thinks it...

88% of workers indicate that they are mildly dissatisfied with their job. A researcher thinks it has increased.

a) Express the null and alternative hypotheses in symbolic form for this claim. When entering the decimal enter the zero before the decimal point. For example, if you have 35%, enter it as 0.35.

H0:H0:

Ha:Ha:

Use the following codes to enter the following symbols:
     ≥≥ enter >=
     ≤≤ enter <=
     ≠≠ enter !=

b) You decide to survey 100 adult Americans and find that 45 of workers indicate that they are mildly dissatisfied with their job. Find the test statistic. Round to two decimal places.

z=z=

c) What is the p-value? Round to 4 decimals.

p=p=

d) Make a decision base on a 0.05 significance level.

  • Do not reject the null
  • Reject the null



e) What is the conclusion?

  • There is not sufficient evidence to support the claim that 88 % of workers indicate that they are mildly dissatisfied with their job has increased
  • There is sufficient evidence to support the claim that 88 % of workers indicate that they are mildly dissatisfied with their job has increased
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