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2 years ago

12

Damien LOVES fruit. He has 22 oranges. If Damien, only eats .2 of a cupcake each day, how many days will it take him to eat all

22 cupcakes?

1 answer:

kvasek [131]2 years ago

4 0

Answer:

c

Step-by-step explanation:

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Two competing headache remedies claim to give fast-acting relief. An experiment was performed to compare the mean lengths of tim

DaniilM [7]

Answer:

$t = 0.875$

Step-by-step explanation:

Given

<u>Brand A</u> <u>Brand B</u>

$n_ 1= 12$ $n_2 = 12$

$\bar x_1 = 21.8$ $\bar x_2 = 18.9$

$\sigma_1 = 8.7$ $\sigma_2 = 7.5$

Required

Determine the test statistic (t)

This is calculated as:

$t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} + \frac{1}{n_2}}}$

Calculate s using:

$s = \sqrt{\frac{(n_1-1)*\sigma_1^2+(n_2-1)*\sigma_2^2}{n_1+n_2-2}}$

The equation becomes:

$s = \sqrt{\frac{(12-1)*8.7^2+(12-1)*7.5^2}{12+12-2}}$

$s = \sqrt{\frac{1451.34}{22}}$

$s = \sqrt{65.97}$

$s = 8.12$

So:

$t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} + \frac{1}{n_2}}}$

$t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{12} + \frac{1}{12}}}$

$t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{6}}}$

$t = \frac{21.8 - 18.9}{8.12 * 0.408}}$

$t = \frac{2.9}{3.31296}}$

$t = 0.875$

3 0

2 years ago

GIVING BRAINLIEST!!!!!!! A rectangular prism has a length of 4 1/4 in., a width of 3 in., and a height of 1 1/4 in. Which expres

den301095 [7]

Answer:

15.9

Step-by-step explanation:

4 1/4 x 3 x 1 1/4 = 15.93

15.93 rounded is 15.9

Hope this helps!

5 0

2 years ago

Please some answer this I need help!! What is A b g h j d c f e k?

Karolina [17]

Answer:there is no g .no h

Step-by-step explanation:how can we tell u have a calculator right

4 0

2 years ago

Read 2 more answers

Which equation is correct using "is not equal to'' (≠)?

romanna [79]

65/5=13-3=10 27-17=10

72/6=12-1=11 54-43=11

88/8=11-2=9 27-18=9

90/3=30-8=22 34-10=24

So, that makes "90 ÷ 3 − 8 _____ 34 − 10" not equal.

Hope this helps! Stay Safe!

5 0

2 years ago

Amanda exercised for 10 minutes every day in the first week, 20 minutes in the second week, 30 minutes in the third week, and 40

Dominik [7]

Amanda's method is linear because the number of minutes increased by an equal number every week.

7 0

1 year ago