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Fudgin [204]
3 years ago
13

A weatherman stated that the average temperature during July in Chattanooga is 80 degrees or less. A sample of 32 Julys is taken

to test the weatherman's statement. The correct set of hypotheses is
Mathematics
1 answer:
baherus [9]3 years ago
7 0

Answer:

The correct set of hypotheses is

H_{0}: d=80 degrees

H_{0}: d>80 degrees

Step-by-step explanation:

The weatherman claims that the average temperature during July in Chattanooga is 80 degrees or less. To test this claim, following hypotheses need to be taken:

Let d be the the average temperature during July in Chattanooga, then

H_{0}: d=80 degrees

H_{0}: d>80 degrees

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the box plot shows the number of home run hit by 43 players during a baseball season.which statement best describe the the data
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Simplify the following expresión by combining like terms: 8x +7 - 2x + y
beks73 [17]

Simplifying the expression 8x +7 - 2x + y, by combining like terms is 6x + y + 7

<h3>How to simplify an expression?</h3>

The expression have to be simplified by combining the like terms.

Like terms are terms whose variables (and their exponents such as the 2 in y²) are the same.

Therefore,

8x +7 - 2x + y

The like terms are 8x and 2x . Therefore, lets combine it.

8x - 2x + y + 7

Therefore, the simplified expression is 6x + y + 7

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2 years ago
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If
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3 years ago
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A frequency table of grades has five classes (A, B, C, D,F) with frequencies of 4, 10, 17, 6, and respectively. Using percentage
fiasKO [112]

We have the frequencies for each of the grades. We can estimate the number of students graded by adding all those frequencies. Let's call N the total number of grades:

\begin{gathered} N=4+10+17+6+2 \\ N=39 \end{gathered}

We have then a total number of grades of 39.

The corresponding relative frequency for a grade is the ratio of the frequency to the total number of "samples", 39 in this case.

Then, for grade A, the relative frequency (RF) will be:

RF_A=\frac{4}{39}\approx0.10256\approx10.26\text{ \%}

This will be the fraction of the total grades that are A. Represented as a percentage will be 10.26%, rounded to two decimal places.

Now, to complete the table we do the same for the other frequencies:

For grade B:

RF_B=\frac{10}{39}\approx0.2564\approx25.64\text{ \%}

For grade C:

RF_C=\frac{17}{39}\approx0.4359\approx43.59\text{ \%}

For grade D:

RF_D=\frac{6}{39}\approx0.1538\approx15.38\text{ \%}

For grade F:

RF_D=\frac{2}{39}\approx0.0513\approx5.13\text{ \%}

4 0
1 year ago
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