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miskamm [114]
2 years ago
11

Use the drawing tools to form the correct answers on the graph.

Mathematics
1 answer:
Dimas [21]2 years ago
5 0

Answer:

y = 1/2+1  increasing by 1/2 (-8 -4 )  (-4  0)   (2  6)

Step-by-step explanation:

increasing by 1/2 (-8 -4 )  (-4  0)   (2  6)   see attached as -2 0  and 0  1 has a midway point   -1  and 1/2

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A study claims that college students spend an average of 4 hours or less studying per day. A researcher wants to check if this c
kirill115 [55]
<h2>Answer with explanation:</h2>

Let \mu be the population mean.

By observing the given information, we have :-

H_0:\mu\leq4\\\\H_a:\mu>4

Since the alternative hypotheses is left tailed so the test is a right-tailed test.

We assume that the time spend by students per day is normally distributed.

Given : Sample size :  n=121 , since n>30 so we use z-test.

Sample mean : \overline{x}=3.15

Standard deviation : \sigma=1.2

Test statistic for population mean :-

z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

\Rightarrow\ z=\dfrac{3.15-4}{\dfrac{1.2}{\sqrt{121}}}\\\\\Rightarrow\ z=-7.79166666667\approx-7.79

Critical value (one-tailed) corresponds to the given significance level :-

z_{\alpha}=z_{0.1}=1.2816

Since the observed value of z (-7.79) is less than the critical value (1.2816) , so we do not reject the null hypothesis.

Hence, we conclude that we have enough evidence to accept that the college students spend an average of 4 hours or less studying per day.

4 0
3 years ago
A dog's leash is 8 feet long. The owner estimates that their hand is 3 feet off the ground. The leash is not parallel to the gro
Elza [17]

Answer: 24 feet

Step-by-step explanation:

5 0
3 years ago
Arnold took a tray of cookies to a party 90% of the cookies were eating only these 5 remain
e-lub [12.9K]

Answer:

50 in total, 45 were eaten

Step-by-step explanation:

If there's only 10% left and 10% is 5 cookies, then that means for every 10% is 5 cookies so 90 x 5 = 45


8 0
3 years ago
Perform the experiment by spinning the spinner 7
castortr0y [4]

Answer:

0.3

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Can anyone answer -4(3-x)-7x and show the work !
Dafna1 [17]
The answer is -12-3x
7 0
3 years ago
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