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IRINA_888 [86]
2 years ago
7

I have three questions.

Mathematics
1 answer:
7nadin3 [17]2 years ago
5 0
According to the graph ab, which of

tickets entered for gift cards if there are 300
total raffle
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Brian invests $10,000 in an account earning 4% interest, compounded annually for 10 years. Five years after Brian's initial inve
Lena [83]
Brian will get 40,000 then Chris will get 70,000
8 0
3 years ago
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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
Anyone know the answer to number 75? I have more questions coming!
mr Goodwill [35]
D) bc 15% of 1000 is 150 and 1000-150 is 850.
7 0
3 years ago
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Suppose that a recent poll of American households about car ownership found that for households with a car, 39% owned a sedan, 3
RUDIKE [14]

Answer: Option 'a' is correct.

Step-by-step explanation:

Since we have given that

Probability of owned a sedan = 39%

Probability of owned a van = 33%

Probability of owned a sports car = 7%

n = 3

We need to find the probability that all three randomly selected households own a van.

So, Probability of getting all 3 own a van is given by

(0.33)^3\\\\=0.035937\\\\\approx 0.036

Hence, Option 'a' is correct.

6 0
4 years ago
How do you write the number 7 × 10-2 in standard form?<br> a. 7<br> b. 0.0007<br> c. 700<br> d. 0.07
zzz [600]
D. 0.07. the negative exponent which is two indicates the number of zeros in the standard form. and the 7 indicates the first number in the standard form
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3 years ago
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