12) 251 students went on a field trip. Six
1 answer:
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Answer:
Step-by-step explanation:
The equation of a line has the following format:
In which m is the slope and b is the y-intercept(value of x when y = 0).
In this question:
Slope 4, which means that .
So
Contains point (1,-8).
This means that when . We replace this into the equation to find b. So
So
You would have to distribute the power and then simply
Answer: No, the data provided is not sufficient evidence to conclude that the mean height of women in the city differs from the national mean.
Step-by-step explanation:
Since we have given that
Mean height = 61.5 inches
Standard deviation = 4.4 inches
n = 100
So, test statistic value would be
At 10% level of significance, in two tail test ,
z = 1.28
Since 1.28 > -2.727
So, we will accept the null hypothesis.
Hence, No, the data provided is not sufficient evidence to conclude that the mean height of women in the city differs from the national mean.