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kati45 [8]
4 years ago
15

Decimal Numbers on Number Lines

Mathematics
1 answer:
Vedmedyk [2.9K]4 years ago
8 0

Answer:

What's Yo Question What Chu Need Help With ?

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We are interested in determining whether the variances of the sales at two music stores (A and B) are equal. A sample of 25 days
Pani-rosa [81]

Answer:

C.

Step-by-step explanation:

Hypothesis testing procedure:

Hypothesis:

The null hypothesis will be the variances of sales of two musical stores are equal and the alternative hypothesis will be the variances of sales of two musical stores are not equal

Level of significance: alpha=0.05

Test statistic: F=variance A/variance B=(30)^2/(20)^2=900/400=2.25

P-value: p=0.107

As the alternative hypothesis mentioned that the variances are not equal this leads to two tailed test. so the p-value is calculated using excel function 2*F.DIST.RT(2.25,24,15).

Conclusion:

The p-value seems to exceed the alpha=0.05 and this depicts that the null hypothesis should not be rejected.

3 0
3 years ago
Simplify (2a – 5)2 using the square of a binomial formula.
victus00 [196]
I’m not sure about the answer but I know it wouldn’t be D because it’s positive. I think it maybe B though. Hope this helps!
7 0
3 years ago
To solve this expression, which operation should be performed last?
Vladimir79 [104]
D. Add 5 to 2 because you start with the parentheses first
6 0
3 years ago
Some math help please <br> thaank ye
neonofarm [45]
The 'template' for a quadratic function is:
f(x) = ax^{2}+bx+c, where <em>a</em> is the vertical stretch/compression factor.
If the <em>a</em> in f(x) is 2/5, then vertically stretching the function is done by multiplying the function by 2, making:
g(x) = 2(\frac{2}{5}x^{2}-2)\\g(x)=\frac{4}{5}x^{2}-2
3 0
4 years ago
Evaluate the expression ........
MatroZZZ [7]

Answer:

13

Step-by-step explanation:

p^2 -6p +6

Let p=-1

(-1)^2 -6(-1) +6

1 +6+6

13

4 0
3 years ago
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