Answer:
Step-by-step explanation:
Given that an exit poll of 1000 randomly selected voters found that 515 favored measure A.
Sample proportion p =
Margin of error 99% = 2.58*SE
=
99% confidence interval =
------------------------
(Right tailed test)
STd error =
Test statistic Z = p diff/std error =
p value = 0.1714
Say the other number is a. The sum is a+P, which also equals 24.
Write it as, a+P=24.
Now subtract P from both sides.
you get, a = 24-P
So, the other number in terms of P is 24 - P
Answer:
BC ≈ 12.6 m
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan31° = = = ( multiply both sides by BC )
BC × tan31° = 7.6 ( divide both sides by tan31° )
BC = ≈ 12.6 m ( to 3 sf )
Answer:
B. Goodness-of-Fit Test
Step-by-step explanation:
Given that a professor expects that the grades on a recent exam are normally distributed with a mean of 80 and a standard deviation of 10.
She records the actual distribution of grades and wants to compare it to the normal distribution
For this expected values are to be got assuming normal and the observed and expected are used to calculate chi square.
Depending on the chi square statistic conclusion is made
Here the test to be done is
B) Goodness of fit test.
A is wrong because test of independence is done when there are more than one categorical variable in the rows.
C is wrong because here homogeneity is not tested
Only B is right.