Answer: 5.37
Step-by-step explanation:
Let x = ACT scores.
Given: ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately normal.
i.e. P(X>28)=0.09 (i)
Now,
(ii)
One -tailed z value for p-value of 0.09 =1.3408 [By z-table]
From (i) and (ii)

Hence, the standard deviation = 5.37
Answer:
The mean for the sampling distribution of the sample proportion is 0.29
The standard deviation for the sampling distribution of the sample proportion is 0.01435
Step-by-step explanation:
The mean for the sampling distribution of the sample proportion is always equal to the true population proportion, in this case; p = 0.29
The standard deviation for the sampling distribution of the sample proportion is calculated as;

Using the given values;
p = 0.29
1 - p = 0.71
n = 1000
The standard deviation becomes;

The s.d becomes 0.01435
Using the distributive property an equivalent expression would be 9z-54
Answer:
Hi my lil bunny!
❀ _____.______❀_______._____ ❀
or it could be 
Step-by-step explanation: Factor the numerator and denominator and cancel the common factors. OR Move the negative in front of the fraction.
Try both of them because they both could be right.
❀ _____.______❀_______._____ ❀
Hope this helped you.
Could you maybe give brainliest..?
Answer:
2x +3x =7-13=4+8
Step-by-step explanation:
5x= -6= 12