Answer:
It is failed to reject the null hypotehesis. There is no enough evidence that the proportion of investors who are risk-averse is not 0.6.
Step-by-step explanation:
We have to perform an hypothesis test of a proportion.
The null and alternative hypothesis are:
We state a significance level of 0.1.
The sample proportion is
The standard deviation is
The test statistic z is calculated as
The P-value of z=0.247 is P=0.8. This value is bigger than the significance level, so the efect is not significant.
It is failed to reject the null hypotehesis. There is no enough evidence that the proportion of investors who are risk-averse is not 0.6.
Answer:
45v+36
Step-by-step explanation:
9•5v= 45v
9•4= 36
45v+36
Answer:
x
=
3
,
−
8
Step-by-step explanation:
Answer:
-19/3
Step-by-step explanation:
11x+-8x--5=-14
11x-8x+5=-14
3x+5=-14
3x=-19
x=-19/3
Fencing means perimeter so that mean 2 times the length + 2 times the width.
Kelly has 240 feet of fencing and the width is 20 feet. So 240 = 2 lengths + 2 widths. So we have to multiply the width by 2 and subtract it from 240. 20x2 = 40. Now 240-40 = 200. So we are left with 200 feet of fencing for the length. Since we have to multiply the length by 2 in the perimeter, we can divide 200 by 2 to get the length. 200/2 = 100. So the length of the fence is 100 feet. Hope this helps and if so please leave a good rating and thanks and maybe even brainliest answer. Thank you I really appreciate it. Have a nice day!