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Allisa [31]
3 years ago
11

Carmine reads an article that says that male college students study less than female college students. Carmine wonders if this i

s really so. He asks 20 randomly selected students – 10 males and 10 females – from his coed dorm to record their study times for a period of 4 weeks. Here are the students’ average weekly study times, to the nearest half-hour:
Male Female
13.5 15.5
6.5 10.0
8.0 10.5
14.5 7.0
12.5 13.0
16.0 12.5
12.0 11.0
9.5 8.5
7.0 8.0
11.5 13.0
a. Is the research hypothesis in this study directional or nondirectional?
b. State the research hypothesis.
c. Calculate t and compare it with the tabled critical t at the .05 ? level. Can you reject the null hypothesis?
d. Do you think these samples are representative of all college males and females? To what populations can Carmine rightfully infer the results?
Mathematics
1 answer:
Romashka [77]3 years ago
7 0

Answer:

hiiiiiiiiiiiiiiiiiii

thisworldthesedays.com

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4. What function represents how much more water can be added to the bucket before it
Elza [17]

The function that represents how much more water can be added to the bucket before it overflows is given as follows:

c(x) = 6x³ + 3x² - 2x - 2.

<h3>How to define the function?</h3>

The function to calculate the space remaining in the pool is given by the subtraction of the capacity function by the function representing the current amount of water in the pool.

The functions in this problem are defined as follows:

  • f(x) = 8x³ + 4x² - 6x + 5.
  • g(x) = 2x³ + x² - 4x + 7.

Then the capacity function is obtained as follows:

c(x) = f(x) - g(x)

c(x) = 8x³ + 4x² - 6x + 5 - (2x³ + x² - 4x + 7)

Then the distributive property is applied to the negative sign as follows:

c(x) = 8x³ + 4x² - 6x + 5 - 2x³ - x² + 4x - 7.

Finally, the like terms are combined, that is, the terms that have the same variable and exponent, as follows:

c(x) = 6x³ + 3x² - 2x - 2.

More can be learned about operations with functions at brainly.com/question/2723982

#SPJ1

5 0
1 year ago
Pls help me asap !!!!!
loris [4]
7x-1+5x-23= 180
12x-24=180
12x=204
X=17
3 0
3 years ago
24"<br> 4 * 3 =<br> Х<br> I really need help the help with this
GREYUIT [131]
288. 4 times 3 is 12. Multiply that with 24 and thats your answer.
8 0
3 years ago
PLSSS HELPP SOOON BRAINLIESTTT
garik1379 [7]

Answer:

1: A) 12 meters

2: B) 225 = (12 + x)(14 + x)

Step-by-step explanation:

42 times 2 = 84

84/12 = 7

(To check) 12 - 7 = 5

I'll be expecting that brainliest :)

6 0
3 years ago
An ice cream shop sells an empty cone for 4.00 plus an additional 1.25 per scoop of ice cream. You have 6.75 to spend. How many
DochEvi [55]

Answer:

2 scoops

Step-by-step explanation:

the flat fee is $4.00. 4+1.25=5.25. You have $6.75 to spend, so you can probably add on another scoop. 5.25+1.25=6.5. I was correct. To simplify, two scoops of ice cream without the cone is $2.50, but you will probably have a cone with your ice cream so that adds on $4.00. $4.00+$2.50=$6.50 and that is the max amount of ice cream scoops and cones since you cannot go over your budget.

5 0
3 years ago
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