Define the null hypothesis

Assignment Help Basic Statistics

Reference no: EM13110089

1. Define the null hypothesis. If the null hypothesis is rejected then?

2. The level of significance is the?

3. Type II error is committed when?

4. The level of significance in hypothesis testing is the probability of?

Please explain and show all calculations.

5. If n=16, mean = 75.76, s = 8.2466 H o: mean >80 H a: mean <80, the standardized test statistic equals?

6. Read the Z statistic from the normal distribution table:

a. A one-tailed test(upper tail) at 87.7% confidence; Z=

b. A two-tailed test at 98.4% confidence; Z=

Reference no: EM13110089

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