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making use of the fact that the chi-square distribution can be approximated with a normal distribution when nu the
with reference to exercise 9 use table ii of statistical tables to find values corresponding to k0025nbspand k0025to
show that the square of the expression for z in exercise 12 equals so that the two tests are actually equivalent when
show that the rule in section 7 for calculating the expected cell frequencies applies also when we test the null
use the formula of exercise 16 to recalculate chi2nbspfor example 10exercise 16show that the following computing
with reference to example 1 verify that the p-value corresponding to the observed value of the test statistic is
with reference to example 3 use suitable statistical software to find the p-value that corresponds to t -049 where t
test at the 005 level of significance whether the mean of a random sample of size n 16 is significantly less than 10
rework exercise 25 basing the decision on the p-value corresponding to the observed value of the test statisticexercise
five measurements of the tar content of a certain kind of cigarette yielded 145 142 144 143 and 146 mgcigarette
with reference to exercise 30 show that if the first measurement is recorded incorrectly as 160 instead of 145 this
with reference to exercise 30 use suitable statistical software to find the p-value that corresponds to the observed
if the same hypothesis is tested often enough it is likely to be rejected at least once even if it is true a professor
an epidemiologist is trying to discover the cause of a certain kind of cancer he studies a group of 10000 people for
with reference to example 4 for what values ofnbsp1nbsp-nbsp2nbspwould the null hypothesis have been rejected also
rework exercise 36 basing the decision on the p-value corresponding to the observed value of the test statisticexercise
sample surveys conducted in a large county in a certain year and again 20 years later showed that originally the
1 determine whether each of the distributions given below represents a probability distribution justify your answer
rework exercise 38 basing the decision on the p-value corresponding to the observed value of the test statisticexercise
to find out whether the inhabitants of two south pacific islands may be regarded as having the same racial ancestry an
with reference to example 5 use suitable statistical software to show that the p-value corresponding to t 267 is
with reference to exercise 42 use suitable statistical software to find the p-value corresponding to the observed value
1 a sample of 65 observations is selected from one population the sample mean is 267 and the sample standard deviation
in a study of the effectiveness of certain exercises in weight reduction a group of 16 persons engaged in these
nine determinations of the specific heat of iron had a standard deviation of 00086 assuming that these determinations