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3 years ago

Amy's favorite lotion cost $30 for four fluid ounces at the same time what would she expect to pay for a quart of lotion

Mathematics

1 answer:

fomenos3 years ago

3 0

Assuming that 1 quart= 32 Fluid Ounces,
if
4oz=$30
*8=*8

32oz=$240

Your answer should be $240.

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Can you help me find the test statistic AND Pvalue for a hypothesis test. The question is: In a survey respondents were asked wo

vitfil [10]

Answer:

Test statistic z=0.65

P-value=0.52

Fail to reject the null hypothesis.

Step-by-step explanation:

Here we have to perform a hypothesis test on the difference of proportions. We may want to answer if there is significant difference in the proportions of male and females.

The null and alternative hypothesis are:

$H_0: \pi_1=\pi_2\\\\H_1: \pi_1\neq\pi_2$

The significance level is defined as 0.05.

The YES proportion for females is:

$p_1=33/98=0.337$

The YES proportion for males is:

$p_2=30/102=0.294$

The weighted average of p can be calculated as:

$p=\frac{n_1*p_1+n_2*p_2}{n_1+n_2}=\frac{33+30}{98+102}=0.315$

With this p, we estimate the standard deviation

$s=\sqrt{\frac{p(1-p)}{n_1}+\frac{p(1-p)}{n_2} }=\sqrt{\frac{0.315(1-0.315)}{98}+\frac{0.315(1-0.315)}{102} }=0.066$

The test statistic z can be calculated as:

$z=\frac{p_1-p_2}{s} =\frac{0.337-0.294}{0.066}=\frac{0.043}{0.066}=0.65$

We can calculate the p-value for z, taking into account is a two-sided test

$P(|z|>0.65)=0.52$

The P-value (0.52) is greater than the significance level (0.05), so the effect is not significant. It failed to reject the null hypothesis.

We have enough evidence to conclude that the proportions that vote YES are different between genres.

8 0

4 years ago

Write an expression equivalent to<br> b10/b5<br> in the form bm.

natka813 [3]

Answer: M equals 7. So it would be b^7. When you multiply exponents you add them. When you divided them you subtract

Step-by-step explanation:

8 0

3 years ago

2 angles measure 40 degrees each, what does the third angle measure? what type of triangle is it?

zimovet [89]

Answer:

Part a): 100 degrees

Part b): Isosceles Triangle

Step-by-step explanation:

Part a): Since the angle measures of all triangles add up to 180 degrees and since the other two angles are 40 degrees, which add up to 80, we can use subtraction to find the answer.

180 - 80 = 100

Part b): Since only two of the three angles in this triangle have the same measure, we can find that it is an isosceles triangle, with base angles measuring 40 degrees, and the vertex angle being 100 degrees.

3 0

3 years ago

Julie is making fruit smoothies. She can make 8 servings of a certain amount of smoothie with 5 ounces of pineapple juice left o

Varvara68 [4.7K]

Answer:

x=38

Step-by-step explanation:

8+5=13

12+11=23

6 0

3 years ago

You randomly draw two cards from a standard deck of playing cards without replacement.what is the probability that both of the c

german

There are 12 face cards in a deck, and one you draw the first face card there will be 11 left so:
(12/52)*(11/51)=132/2652=11/221

7 0

3 years ago

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