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makkiz [27]
3 years ago
5

Classify the conclusion of the hypothesis test as a Type I error, a Type II error, or a correct decision. In 1991, the average m

ath SAT score for students at one school was 465. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed from the 1991 mean of 465. The hypotheses are: H0: μ-465 H1: μ # 465 Suppose that the results of the sampling lead to rejection of the null hypothesis. Classify that conclusion as a Type I error, a Type II error, or a correct decision, if in fact the average math SAT score of students at the school has changed from the 1991 mean of 465.
A. Type II error
B. Correct decision
C. Type I error
Mathematics
1 answer:
Fofino [41]3 years ago
8 0

Answer:

B. Correct decision

Step-by-step explanation:

We know that the average math SAT score of students at the school has changed from the 1991 mean of 465. That is μ≠465.

This hypothesis was tested and the null hypothesis, that states that the average math SAT score of students at the school has not changed from the 1991 mean, was rejected.

Then, the conclusion of rejecting the null hypothesis is right, as μ=465 is false.

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katovenus [111]
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3 0
3 years ago
The temperature at 6.00 am was - 12 the temperature increased by 1/2 each hour for 6 hours what was the temperature in degrees F
Illusion [34]

Answer: -9 degrees Fahrenheit

Step-by-step explanation:

Given: Temperature at 6:00 AM = -12 degrees Fahrenheit

Temperature increased each hour = \dfrac12 degrees Fahrenheit

Temperature increase in 6 hours = 6\times\dfrac12=3\text{ degrees Fahrenheit}

Temperature at noon = Temperature at 6:00 AM+Temperature increase in 6 hours

= -12+3 degrees Fahrenheit

= -9 degrees Fahrenheit

Hence, the temperature in degrees Fahrenheit at noon= -9 degrees Fahrenheit

8 0
2 years ago
Which of the following inequalities represents the statement, "A number, x, decreased by 13 is less than or equal to 39"?
svp [43]
X - 13 < ( with a line under the symbol) 39
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3 0
3 years ago
Explain how the number of pieces in a whole relates to the size of each piece
astra-53 [7]
As the number of pieces in a whole gets larger, the size of the pieces gets smaller. This is represented by the denominator in a fraction. As the denominator increases, the number of pieces the whole is divided into also increases so the size of the pieces is smaller.
1/2 > 1/3 > 1/4 > 1/5 etc...

Fractions get smaller as the denominator gets bigger.
4 0
3 years ago
Someone please help asap! I will mark as brainliest, thank you!!
madreJ [45]

Answer:

19 square units

Step-by-step explanation:

Hello!

Step 1: Plot the points

We are first going to plot the points on the coordinate graph and connect the points to create a shape.

Refer to attachment titled "Step 1"

Step 2: Box the shape

Since this is an irregular shape, I'm going to make a box around the shape and subtract the area of the empty spaces to find the area of the original polygon.

Refer to attachment titled "Step 2"

Step 3: Area of Edges

We are going to find the area of the shapes A, B, and C and subtract them from the area of the big box to find the area of the polygon.

Area of a triangle = 1/2(base x height)

  • Area of Box = 6 un x 7 un
  • Area of Box = 42 un²

Area of A:

  • Area A = 1/2(4 un x 2 un)
  • Area A = 1/2(8 un²)
  • Area A = 4 un²

Area of B:

  • Area B = 4 un x 4 un
  • Area B = 16 un²

Area of C:

  • Area C = 1/2(2 un x 3 un)
  • Area C = 1/2(6 un²)
  • Area C = 3 un²

Step 4: Area of the polygon

Now, we can simply subtract the values of A, B, and C from the box to get the area of the polygon.

  • Area Polygon = Box - A - B - C
  • Area Polygon = 42 un² - 4 un² - 16 un² - 3 un²
  • Area Polygon = 38 un² - 16 un² - 3 un²
  • Area Polygon = 22 un² - 3 un²
  • Area Polygon = 19 un²

The area of the polygon is 19 un²

-Chetan K

6 0
2 years ago
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