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lana66690 [7]
3 years ago
5

Can someone help me with this question please?

Mathematics
1 answer:
gladu [14]3 years ago
4 0
X-intercept is (1.2,0)
y-intercept is (0,-1.5)
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Preliminary data analyses indicate that it is reasonable to use a t-test to carry out the specified hypothesis test. Perform the
Readme [11.4K]
<h2>Answer with explanation:</h2>

By considering the given information, we have

Null hypothesis : H_0: \mu=35.0

Alternative hypothesis : H_1: \mu\neq35.0

Since the alternative hypothesis is two-tailed , so the test is a two-tailed test.

Given : Sample size : n= 20, since sample size is less than 30 so the test applied is a t-test.

\overline{x}=41.0    ;    \sigma= 3.7

Test statistic : t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

i.e. t=\dfrac{41.0-35.0}{\dfrac{3.7}{\sqrt{20}}}=7.252112359\approx7.25

Degree of freedom : n-1 = 20-1=19

Significance level = 0.01

For two tailed,  Significance level =\dfrac{0.01}{2}=0.005

By using the t-distribution table, the critical value of t =t_{19, 0.005}=2.861

Since , the observed t-value (7.25) is greater than the critical value (2.861) .

So we reject the null hypothesis, it means we have enough evidence to support the alternative hypothesis.

We conclude that there is some significance difference between the mean score for sober women and 35.0.

3 0
3 years ago
What is the constant of proportionality between y and x in the graph? (WILL MARK BRAINLIST IF RIGHT!)
sweet [91]

Answer:

2

Step-by-step explanation:

4 can be divided by 2 & 2 can be divided by 2

5 0
3 years ago
I hope to better understand these math questions, could you help me?
mart [117]
Answer is SSA  (first choice)

cause LE perpendicular to BU so LEB = LEU = 90

hope it helps
7 0
3 years ago
Work out the size of angle x.<br> х<br> 79°<br> 350
MaRussiya [10]

what angle is it I need 2 no cuz I cannot help u without the angle

4 0
3 years ago
Find the critical numbers of the function. (enter your answers as a comma-separated list. if an answer does not exist, enter dne
NNADVOKAT [17]

The critical values of the function are x = 0 and x = 64

The critical values of a function f(x) are the values of x for which f'(x) = 0.

Given,

f(x) = \frac{x^{4} }{5(x-8)^{2} }

The derivative is found as follows, applying the quotient rule:

f'(x) = \frac{[5(x^{4} )(x-8)^{2}-5x^{4} [(x-8)^{2} ]' }{[5(x-8)^{2} ]^{2}  }

     = \frac{2x^{3}(x-64) }{5(x-8)^{3} }

The zeros of the function are the zeros of the numerator, thus:

2x^{3} (x-64) =0\\2x^{3} =0-------- > x =0\\

x - 64 = 0------------->x = 64

The critical values are x = 0 and x = 64

Learn more about critical values here:brainly.com/question/12958088

#SPJ4

3 0
1 year ago
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