4.) Which of the following represents a unit rate? (2 Points) A.) 300 miles in 5 hours B.) 120 miles in 2 hours C.) 50 miles in
1 answer:
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Answer:
I'm afraid that none of them are, as the x-intercepts of the equation are 0 and 9 respectively
however, D. is the closest to it, and it would be the correct graph if there were parentheses around
Step-by-step explanation:
Answer:
We are confident that the true proportion of people satisfied with the quality of education the students receive is between (0.3995, 0.4564), since the lower value for this confidence level is higher than 0.38 we have enough evidence to conclude that the parents' attitudes toward the quality of education have changed.
Step-by-step explanation:
For this case we are interesting in the parameter of the true proportion of people satisfied with the quality of education the students receive
The confidence level is given 95%, the significance level would be given by and
. And the critical values are:
The estimated proportion of people satisfied with the quality of education the students receive is given by:
The confidence interval for the proportion if interest is given by the following formula:
And replacing the info given we got:
We are confident that the true proportion of people satisfied with the quality of education the students receive is between (0.3995, 0.4564), since the lower value for this confidence level is higher than 0.38 we have enough evidence to conclude that the parents' attitudes toward the quality of education have changed.