Which of the following is the equation of the line that has x-intercept -2 and y-intercept -6?
1 answer:
You might be interested in
Answer:
.966
Step-by-step explanation:
To work out the multiplier, first add or subtract the percentage from 100, then convert to a decimal.
The ratio of boys to girls would be since you can divide both 14 and 21 by 7, the simplified form would be
.
The answer is 2 to 3.
Answer:
The pvalue of the test is 0.0001 < 0.02, which means that we reject the null hypothesis and accept the alternate hypohteis that the proportion of all children in the United States who currently live with at least one grandparent is higher than 11%.
Step-by-step explanation:
Proportion of all children in the United States who currently live with at least one grandparent is higher than 11%
This means that the null hypothesis is:
And the alternate hypothesis is:
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis,
is the standard deviation and n is the size of the sample.
0.11 is tested at the null hypothesis:
This means that
Suppose that in a recent sample of 1550 children, 214 were found to be living with at least one grandparent.
This means that:
Value of the test statistic:
Pvalue of the test and decision:
This is the probability of finding a sample proportion above 0.1381, which is 1 subtracted by the pvalue of Z = 3.54.
has a pvalue of 0.9999
1 - 0.9999 = 0.0001
The pvalue of the test is 0.0001 < 0.02, which means that we reject the null hypothesis and accept the alternate hypohteis that the proportion of all children in the United States who currently live with at least one grandparent is higher than 11%.