Answer:
Step-by-step explanation:
The null hypothesis is:
H0: μ(1995)=μ(2019)
The alternative hypothesis is:
H1: μ(1995)<μ(2019)
Because Roger wants to know if mean weight of 16-old males in 2019 is more than the mean weight of 16-old males in 1995 the test only uses one tail of the z-distribution. It is not a two-sided test because in that case the alternative hypothesis would be: μ(1995)≠μ(2019).
To know the p-value, we use the z-statistic, in this case 1.89 and the significance level. Because the problem does not specify it, we will search for the p-value at a 5% significance level and at a 1%.
For a z of 1.89 and 5% significance level, the p-value is: 0.9744
For a z of 1.89 and 1% significance level, the p-value is: 0.9719
Answer:
Step-by-step explanation:
you have 1144 books but without knowing how many rows there are i cant help you find the minimum number.
but all you have to do is take the number of the books all together (1144)
then divide that number by how many rows or shelf there are
9514 1404 393
Answer:
see below
Step-by-step explanation:
A number line usually has numbers increasing from the right. If each unit on the number line represents $100, then a gain of $500 would be represented by the point at +5 units (right of 0). The loss would be represented by a point at -5 units, located left of 0.
The points are equidistant from 0 in opposite directions.
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Answer:
29
Step-by-step explanation:
AB+BC=AC
12+17=29=AC
