You are conducting a study to see if the mean doctor's salary (in thousands of dollars) is significantly more than 87. A random sample of 28 doctors' salary in thousands of dollars is shown below. Test the claim using a 10% level of significance. Give answer to at least 4 decimal places.
Salary |
---|
82.7 |
94.31 |
81.21 |
89.82 |
96.93 |
100.21 |
98.9 |
95.46 |
87.97 |
87.73 |
103.29 |
104.09 |
84.76 |
87.8 |
98.84 |
83.66 |
78.13 |
93.94 |
90.7 |
84.06 |
91.93 |
91.71 |
89.15 |
96.84 |
87 |
87.82 |
90.03 |
92.2 |
What are the correct hypotheses?
H0:
thousand dollars
H1:
thousand dollars
Based on the hypotheses, find the following:
Test Statistic =
Critical-value =
Shade the sampling distribution curve with the correct critical value(s) and shade the critical regions. The arrows can only be dragged to t-scores that are accurate to 1 place after the decimal point (these values correspond to the tick marks on the horizontal axis). Select from the drop down menu to shade to the left, to the right, between or left and right of the t-score(s).
Shade: . Click and drag the arrows to adjust the values.


The correct decision is to
The correct summary would be: that the population mean doctor's salary (in thousands of dollars) is significantly more than 87.