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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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If I bought 4 cupcakes for $6, how much would each cupcake cost?
alekssr [168]
Hello! For this question, we are looking for the unit rate. To find the unit rate, all you have to do is divide the cost by the number of cupcakes bought. In this case that's 6/4. 6/4 is 1.5. There. Each cupcake costs $1.50.
8 0
3 years ago
Read 2 more answers
A) Find the distance of line segment PR. Round answer to the nearest tenth. B) Find the distance around the park (perimeter).
juin [17]

Answer:

A. PR = 80.6 yd

B. Perimeter = 190.6 yd

Step-by-step explanation:

A. Distance between P(10, 50) and R(80, 10):

PR = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

PR = \sqrt{(80 - 10)^2 + (10 - 50)^2}

PR = \sqrt{(70)^2 + (-40)^2}

PR = \sqrt{4,900 + 1,600}

PR = \sqrt{6,500}

PR = 80.6 yd (nearest tenth)

B. Distance around the park = Perimeter = PR + PQ + QR

PR = 80.6 yd

PQ = |50 - 10| = 40 yd

QR = |80 - 10| = 70 yd

Perimeter = 80.6 + 40 + 70

Perimeter = 190.6 yd

7 0
2 years ago
Can someone please help me and explain​
Fiesta28 [93]

Answer:

0.23

Step-by-step explanation:

3 0
3 years ago
there are 680 students and Cassie's High School 40% of the students are taking Spanish how many students are taking Spanish​
snow_lady [41]
272

680 x 0.40 = 272
8 0
3 years ago
Solve for |2x + 4|-1=7
Rudik [331]

Answer:

x = - 6 or x = 2

Step-by-step explanation:

The absolute value function always returns a positive value. However, the expression inside can be positive or negative.

Given

| 2x + 4 | - 1 = 7 ( add 1 to both sides )

| 2x + 4 | = 8, thus

2x + 4 = 8 ( subtract 4 from both sides )

2x = 4 ( divide both sides by 2 )

x = 2

OR

-(2x + 4) = 8

- 2x - 4 = 8 ( add 4 to both sides )

- 2x = 12 ( divide both sides by - 2 )

x = - 6

As a check

Substitute these values into the left side of the equation and if equal to the right side then they are the solutions.

x = 2 → | 4 + 4 | - 1 = | 8 | - 1 = 8 - 1 = 7 ← True

x = - 6 → | - 12 + 4 | - 1 = | - 8 | - 1 = 8 - 1 = 7 ← True

Hence the solutions are x = - 6 or x = 2

6 0
3 years ago
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