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Oxana [17]
2 years ago
5

For a lower tail hypothesis test with a sample size of 10 and a .10 level of significance, the critical value of the test statis

tic t is
Mathematics
1 answer:
Fynjy0 [20]2 years ago
5 0

Using a t-distribution calculator, it is found that the critical value of the test statistic t is t^{\ast} = -1.383.

<h3>How to find the critical value of a t-test?</h3>
  • The critical value is found using a calculator.

The inputs are:

  • The tail.
  • The amount of degrees of freedom, which is one less than the sample size.
  • The significance level.

In this problem, we have a<u> lower(left-tailed) test, with 10 - 1 = 9 df and a level of significance of 0.1</u>, hence the critical value is t^{\ast} = -1.383.

You can learn more about the t-distribution at brainly.com/question/26062194

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Answer this question for me please cause idk it
Greeley [361]

H=-4.9t^2+25t 0=t(-4.9t+25) T=25÷4.9 T= approx 5.1 which is closes to 5.0  So answer will be 5.0

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3 years ago
A projectile is fired directly upward. The compound inequality 89 – 9.8t &lt; 10.6 or 89 – 9.8t &gt; 20.4 represents a projectil
Tom [10]

Given compound inequality 89 – 9.8t < 10.6 or 89 – 9.8t > 20.4.

Let us solve them one by one.

89 – 9.8t < 10.6

Subtracting 89 from both sides, we get

89-89 – 9.8t < 10.6 - 89

-9.8t < -78.4

Dividing both sides by -9.8, we get

t > 8.

<em>Note: Inequality sign get flip on dividing both side by a negative number.</em>

89 – 9.8t > 20.4

Subtracting 89 from both sides, we get

89-89 – 9.8t < 20.4 - 89

-9.8 t < - 68.6.

Dividing both sides by -9.8, we get

t < 7

<em>Note: Inequality sign get flip on dividing both side by a negative number.</em>

<h3><em> The solution to the inequality 89 – 9.8t < 10.6 is </em>t > 8. </h3><h3> The solution to the inequality 89 – 9.8t > 20.4 is t < 7.</h3>

When the projectile hits the ground:

89 – 9.8t = 0

Subtracting 89 from both sides, we get

89 - 89 – 9.8t = 0 -89.

-9.8t = -89.

Dividing both sides by 9.8, we get

<h3>to the nearest whole second  t is about 9 seconds.</h3><h3>Therefore, variable solution set is {t < 7, t > 8, t = 9}.</h3><h3 />
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3 years ago
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Answer:

30cm

Step-by-step explanation:

5+5+12+8

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A group of 7 students was asked, "How many hours did you watch television last week?" Here are their responses. 17, 19, 5, 17, 2
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Answer:

≈ 14.3 hours

Step-by-step explanation:

The mean is calculated as

mean = \frac{sum}{count} = \frac{17+19+5+17+20+6+16}{7} = \frac{100}{7} ≈ 14.3 ( to nearest tenth )

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Answer:

Summer school (or summer university) is a school, or a program generally sponsored by a school or a school district, or provided by a private company, that provides lessons and activities during the summer vacation.

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