Sharon wants to know about how many pairs of sneakers 7th-grade students own. she c
349 7th graders, so she asked 10 to get a random sample.
these were her results: 5, 3, 2, 4, 5, 1, 2, 4, 3, 3; mean = 3.2
from the data and by calculating the mean, which inferences could sharon make?
all 7th-grade students own sneakers.
an average 7th-grade student owns around 3 pairs of sneakers.
an average 7th-grade student owns 4 or more pairs of sneakers.
most 7th-grade students prefer sandals to sneakers.

Anull hypothesis states that the difference between 8 hours of sleep and 3 hours of sleep has no effect on the number of pictures a student will remember during a picture memory interface test (pmit). examining the mit database, an extremely small t-value of 0.1611 is found. this t-value is much smaller than the smallest t-value on the chart for p-value reference. from this information we can: select one: a. accept the null hypothesis because the p-value obtained shows that the difference between the two groups being tested is not statistically significant b. accept the null hypothesis because the p-value obtained was statistically significant c. reject the null hypothesis because of the p-value obtained d. reject the null hypothesis because the data obtained is statistically significant