For a population comprising 30% males, what is the probabilility of drawing a random sample
tutor4helpyou
question.docx|
4.9% |
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30.0% |
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46.7% |
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50.0% |
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53.3% |
If the variable "Age" were uniformly distributed over the range measured in the sample, the mean would be:
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26 |
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37 |
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38.5 |
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45 |
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71 |
Assume that Pay follows a normal distribution with the parameters measured by the sample. Using this information, what proportion of the population earns more than $45000?
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20.9% |
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22.7% |
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77.3% |
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78.1% |
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87.6% |
Assume that Pay follows a normal distribution with the parameters measured by the sample. Using this information, what proportion of the population earns between $45000 and $55000?
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20.9% |
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48.6% |
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52.4% |
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73.3% |
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Cannot be calculated |
The lower bound of the 95% confidence interval for the mean of the variable "Pay" is:
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$49632 |
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$49878 |
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$50004 |
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$51307 |
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$51432 |
The upper limit of the 90% confidence interval for the proportion of males in the sample is:
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35.1% |
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34.3% |
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25.8% |
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25.0% |
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23.4% |
In order test whether the mean Tenure is more than 5 years, the hypotheses should be set up as follows:
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H0: µ≥5 and HA: µ≤5 |
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H0: µ≠5 and HA: µ |
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H0: µ and HA: µ≠5 |
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H0: µ≥5 and HA: µ<5 |
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H0: µ≤5 and HA: µ>5 |
For the equivalent group of employees at Ellion, the mean gross annual remuneration is $51500 with a standard deviation of $7000. At a 1% significance level, testing the hypothesis that the results from the BizPro sammmple are the same results in the following decision:
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Reject H0 |
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Reject HA |
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Accept H0 |
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Do not reject H0 |
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Do not reject HA |
When testing the hypothess that the proportion of males in the sample is 35% at a 1% significance level, the decision is:
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Accept the null hypothesis |
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Reject the null hypothesis |
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Do not reject the null hypothesis |
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Do not reject the alternative hypothesis |
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Reject the alternative hypothesis |
