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emeka valentine

emeka v.

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INSTANT ANSWER

6(a). Define the following terms (i). power of a test (ii). Critical value (iii). Type II erro.(b)Suppose that a random sample X, X,...,X, arises from a normal population with unknown mean a and unknown variance e. Find the size a likelihood ratio test for testing the null hypothesis Ho: uue against Hip. va3. C

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12. The mean reading speed of a random sample of 81 adults is 325 words per minute. Finda \( 90 \% \) C.I. For the mean reading speed of all adults \( (\mu) \) if it is known that the standard deviation for all adults is 45 words per minute.

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Consider the following data on living area of mothers and birth weights (kg) of their children which were randomly taken from the records of a given health center. Rural area: 2.90, 3.28, 2.38, 3.06, 2.60, 2.80 and Urban area: 3.19, 3.20, 3.24, 3.16, 2.92, 3.68, 3.40, 3.31, 2.51, 2.80 Test the hypothesis that babies born to mothers coming from rural areas have equal birth weights (Assume that the distribution is not skewed and take the level of significance as 5%)

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INSTANT ANSWER

a hospital administrator wishes to know what proportion of discharged patients are unhappy with the care received during hospitalisation. if 95% confidence interval is desired to estimate the proportion within 5%, how large a sample should be drawn?

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