A statistical hypothesis is ________.

a conjecture about a population parameter

The level of significance (α) is______.

the probability of committing a type one error

What are the two types of statistical hypotheses ?

Null hypothesis and alternative hypothesis

What are the two methods of hypothesis testing?

the traditional method and the P-value method

To make a decision in the traditional method, we compare the______.

Critical Value(CV) with the Test Value.

When we test a mean, and σis unknown, the test value is computed using the following formula_____.

t=\frac{\left(\overline{x}-μ\right)}{\frac{s}{\sqrt{n}}}

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Hypothesis testing 1

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Answers

1
A statistical hypothesis is ________.
a null hypothesis
a cojecture about a sample statistics
an alternative hypothesis
a conjecture about a population parameter
2
Decision rule when using a P-value method, if P-value\leα
reject the null hypothesis
support the claim
None of the above
do not reject the null hypothesis
3
The level of significance (α) is______.
the critical value
none of the answers
the probability of committing a type two error
the probability of committing a type one error
4
What are the two types of statistical hypotheses ?
Null hypothesis and alternative hypothesis
H1 and H2 hypothesis
None of the answers
Null hypothesis and population hypothesis
5
To test a mean, when do we use t instead of z ?
None of the answers
when σis known
when we have raw data
when σis unknown
6
What are the two methods of hypothesis testing?
the traditional method and the P-value method
the null hypothesis method and the alternative hypothesis method
the rejection and non-rejection method
the critical and non-critical method
7
To test the hypothesis for a standard deviation, what distribution do we use?
t distribution
any distribution can be used
chi-square distribution
normal distribution
8
To make a decision in the traditional method, we compare the______.
Critical Value(CV) with the significance level
Critical Value(CV) with the Test Value.
Test Value and P-value
P-value and the significance level
9
When we test a mean, and σis unknown, the test value is computed using the following formula_____.
t=\frac{\left(\overline{x}-μ\right)}{\frac{s}{\sqrt{n}}}
z=\frac{\left(\overline{x}-μ\right)}{\frac{σ}{\sqrt{n}}}
None of the answers
z=(phat-p)/(sqrt(p*q/n))
10
If you wish to test the claim that the proportion of the population is 0.43, the appropriate null hypothesis (H0) is__.
H0: p=0.43
H0: p\ne0.43
H0: μ=0.43
H0: p=0.57
11
A test is right-tailed when the alternative hypothesis (H1) contains______.
">" sign
None of the answers
"<" sign
"≠" sign

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