In hypothesis of comparing two population proportions, each of the two samples must satisfy the requirement that n p greater or equal than 5 and n q space greater or equal than space 5.
T
In an unpaired samples t-test with sample sizes n subscript 1 space equals space 21 and n subscript 2 space equals space 11 , the value of t should be obtained at 32 degree of freedom.
F
A type I error is the mistake of rejecting the null hypothesis when it is actually false.
F
The power of a statistical test is the probability of rejecting the null hypothesis when it is false.
T
If we have more than 10 matched pairs of sample data, we can consider the sample to be large and there is no need to check for normality.
F
In case of hypothesis testing for a sample, the t statistic is used if sigma is not known and sample size n is less than 30 left parenthesis space n less than 30 space right parenthesis.
F
Which of the following tests is used for comparing two population variances or standard deviations:
F test
If we are using single sample t test for testing population mean then degrees of freedom for t distribution will be
n-1
Area of the rejection region depends on:
Size of α
When testing a hypothesis about a single proportion, if np > 5 and n(1 – p) > 5, then we will use which of the following test statistic:
Z
In hypothesis test of comparing two populations proportions if sample sizes n subscript 1 space equals space 100 and n subscript 2 space equals space 100 numbers of successes x subscript 1 space equals space 39, x subscript 2 space equals space 41 , then pooled estimate top enclose p:
0.4
If p-value < α, then
Reject H0