Answer: 
.
Step-by-step explanation:
Given : Sample size : n= 64 , the sample is a large sample (n>30), so we can apply z-test.
Sample mean = 
Standard deviation : 
Level of confidence:
Then, critical z-value =
The confidence interval to estimate the population mean is given by :_
Hence, the 95% confidence interval to estimate the population mean can be computed as .
Answer:
300x
Step-by-step explanation:
alll you have to do is multipy 15 and 20 and you will get 300
after that just add the x to the end
Answer:
y = -3x -2
Step-by-step explanation:
Rise over run is 
, which is -3. That is the slope (M value). y intercept is -2, so that is the B value. Let's put it all in the equation.
y = -3x -2
Answer: She has to score a minimum of 92 marks to take her average to 80
Step-by-step explanation:
Let the equation be
Three months total = 76 x 3 = 228
(x + 228) / 4 = 80
x + 228 = 80 x 4
x = 320 - 228
x = 92
The distance of Jamal's house to the park is 12 miles.
<h3>How to find the number in miles from Jamal's house to the park?</h3>
The distance from Loretta's house to a park is 43 miles.
Her friend Jamal lives along this same highway between Loretta's house and the park.
The distance from Loretta's house to Jamal's house is 31 miles.
The situations forms a straight line segment.
Therefore,
Loretta's house distance to the park = 43 miles
Lorretta's house distance to Jamal's house = 31 miles
Therefore,
distance of Jamal's' house to the park = 43 - 31
distance of Jamal's' house to the park = 12 miles
learn more on distance in miles here: brainly.com/question/13835201
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