Solution-State the null and alternative hypotheses

State the null and alternative hypotheses

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Reference no: EM133082753

A professor believes that the final examination scores in statistics are normally distributed. A sample of 40 final scores has been taken. You are given the sample below. The mean of the scores is 83.1 and the standard deviation is 10.38.

56	63	65	68	72	72	73	75	77	78
78	79	80	80	80	80	80	80	81	81
82	84	84	86	86	87	88	90	90	92
92	93	93	94	95	96	97	98	100	100

a. State the null and alternative hypotheses.

b. Compute the test statistic for the goodness of fit test.

c. At the 1% level using the p-value approach, test the hypotheses. What do you conclude about the distribution of final examination scores?

Reference no: EM133082753

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State the null and alternative hypotheses

Reference no: EM133082753

Reference no: EM133082753

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56	63	65	68	72	72	73	75	77	78
78	79	80	80	80	80	80	80	81	81
82	84	84	86	86	87	88	90	90	92
92	93	93	94	95	96	97	98	100	100

56	63	65	68	72	72	73	75	77	78
78	79	80	80	80	80	80	80	81	81
82	84	84	86	86	87	88	90	90	92
92	93	93	94	95	96	97	98	100	100

56	63	65	68	72	72	73	75	77	78
78	79	80	80	80	80	80	80	81	81
82	84	84	86	86	87	88	90	90	92
92	93	93	94	95	96	97	98	100	100