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frez [133]
3 years ago
7

Two students are interested in whether or not there is variation in their test scores for math class. There are 15 total math te

sts they have taken so far. The first student's grades have a standard deviation of 38.2. The second student's grades have a standard deviation of 22.5. The second student thinks his scores are lower. State the null and alternative hypotheses.
Mathematics
1 answer:
professor190 [17]3 years ago
4 0

Answer:

H_0=\sigma_1 =\sigma_2

H_a=\sigma_1 >\sigma_2

Step-by-step explanation:

From the question we are told that

Number of math tests n=15

standard deviation 1 \sigma _1=38.2

standard deviation 1 \sigma _2=22.5

Generally given the two tailed test the null hypothesis is given as

H_0=\sigma_1 =\sigma_2

Generally given the two tailed test the null hypothesis is given as

H_a=\sigma_1 >\sigma_2

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Answer:

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Start by putting all of the values in order from least to greatest.

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Range

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The mean is another word for the average. To calculate the average, add all of the values and divide the sum by the number of values.

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Mode

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Lower Quartile

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