Question

Non-diabetic patients are believed to have an average fasting sugar level of 80 and std deviation of 10. Now you wish to take the mean of a sample of size 100 and check at 5% significance level, then what will be your critical values beyond which you will reject the null hypothesis?

Answer 1

hey here's your ans
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Answer 2

Answer:

The general level of the sugar in a normal healthy man would be around 90mg / dl. Slightly above which a person cannot be called diabetic but a very high increase in this level would surely be called a diabetic patient.

Now in fasting the level of sugar decreases to 80 with a standard deviation of  10. So, according to the question if the sample is 100 hence the critical value  beyond which one will reject null hypothesis will be 80-1.96 mm or 80+1.96 mm.