2. Solve the following word problems: Provide one Null Hypothesis and its associ

Question

2. Solve the following word problems: Provide one Null Hypothesis and its associated equation, one Directional Research Hypothesis and its associated equation and one Non-Directional Research Hypothesis and its associated equation for EACH of the following topics.

The effects of Radiation and Chemotherapy on cancer cells.

The time needed to complete a statistics problem by hand and by a computer.

The amount of time spent on the internet by Elementary-age students and College-age students.

The amount of money spent at Starbucks among male college students and female college students.

Explanation / Answer

Solution:-

a) The effects of Radiation and Chemotherapy on cancer cells.

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: Radiation = 2Chemotherapy
Alternative hypothesis: Radiation 2Chemotherapy

Note that these hypotheses constitute a two-tailed test. The null hypothesis will be rejected if the difference between sample means is too big or if it is too small.

One directional,

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: Radiation = Chemotherapy
Alternative hypothesis: Radiation > Chemotherapy

b)

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: Hand = Computer
Alternative hypothesis: Hand Computer

Note that these hypotheses constitute a two-tailed test. The null hypothesis will be rejected if the difference between sample means is too big or if it is too small.

One directional,

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: Hand = Computer
Alternative hypothesis: Hand < Computer

c)

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: Elementary age = College age
Alternative hypothesis: Elementary age College age

Note that these hypotheses constitute a two-tailed test. The null hypothesis will be rejected if the difference between sample means is too big or if it is too small.

One directional,

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: Elementary age = College age
Alternative hypothesis: Elementary age >College age

d)

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: Male = Female
Alternative hypothesis: Male Female

Note that these hypotheses constitute a two-tailed test. The null hypothesis will be rejected if the difference between sample means is too big or if it is too small.

One directional,

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: Male = Female
Alternative hypothesis: Male < Female

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