What's the common Factors of {20, 48} ?
2 answers:
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Answer:
The pvalue of the test is 0.3844 > 0.1, which means that there is not sufficient evidence at the 0.10 level to support the executive's claim
Step-by-step explanation:
A publisher reports that 35% of their readers own a laptop.
This means that the null hypothesis is:
A marketing executive wants to test the claim that the percentage is actually different from the reported percentage.
This means that the alternate hypothesis is:
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis,
is the standard deviation and n is the size of the sample.
0.35 is tested at the null hypothesis:
This means that
A random sample of 190 found that 32% of the readers owned a laptop.
This means that
Z-statistic:
pvalue of the test and decision:
As we are testing that the mean is different from a value and z is negative, the pvalue of the test is 2 multiplied by the pvalue of z = -0.87
Looking at the z-table, z = -0.87 has a pvalue of 0.1922
2*0.1922 = 0.3844
0.3844 > 0.1, which means that there is not sufficient evidence at the 0.10 level to support the executive's claim
Answer:
The slope of the line reflects the actual trend of the data
Step-by-step explanation:
<u><em>The options of the question are</em></u>
a. The slope should be negative.
b. The spacing for each axis must be chosen so that the line reflects a positive slope.
c. The slope of the line reflects the actual trend of the data.
d. The slope of a line is not important in analyzing a line graph
we know that
The slope of a line is the steepness of the line ( the change in 'y' over the change in 'x',)
The formula to calculate the slope between two points is equal to
where
---> is called the rise
is called the run
Is important because the slope of the line reflects the actual trend of the data