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3 years ago

Solve x/48 = 5/6 using two different strategies.

1 answer:

5 0

You can do this:
6 * ? = 48, ? = 8, so you multiply the five by 8 too, and you find that x = 40. Another method you can use would just to be to add 5 to the top and 6 to the bottom until the denominators equal each other.

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A researcher wants to see if a kelp extract helps prevent frost damage on tomato plants. One hundred tomato plants in individual

Anna11 [10]

Answer:

The 95% confidence interval for the true difference in the proportion of tomato plants like these that would experience damage after receiving the kelp treatment and no kelp treatment is -0.2690 < $\hat{p}_1-\hat{p}_2$ < 0.02901

Step-by-step explanation:

The given data are;

The number of the group 1 plants that exhibited damage = 12

The number of plants in group 1, n₁ = 50

The number of the group 2 plants that exhibited damage = 18

The number of plants in group 2, n₂ = 50

The proportion of group 1 plants that exhibited damage, $\hat p_1$ = 12/50 = 0.24

The proportion of group 2 plants that exhibited damage, $\hat p_2$ = 18/50 = 0.36

The z-value at 95% = 1.64

The confidence interval is given by the following formula;

$C.I. = \hat{p}_1-\hat{p}_2\pm z^{*}\sqrt{\dfrac{\hat{p}_1\left (1-\hat{p}_1 \right )}{n_{1}}+\dfrac{\hat{p}_2\left (1-\hat{p}_2 \right )}{n_{2}}}$

Plugging in the values, we get;

$C.I. = 0.24-0.36\pm 1.64 \times \sqrt{\dfrac{0.24\left (1-0.24 \right )}{50}+\dfrac{0.36\left (1-0.36 \right )}{50}}$

Therefore, C.I. = -0.2690 < $\hat{p}_1-\hat{p}_2$ < 0.02901

7 0

3 years ago

Which of the following is true of the data set represented by the box plot?

NikAS [45]

Answer:

D. Removing all the outliers would not effect the median

Step-by-step explanation:

Among the choices provided above the one that is true of the data set represented by the box plot is Removing the outliers would not affect the median.

(credits to

Maddycolgrove and Answer Expert Verified Brainly User)

6 0

3 years ago

What is the answer to 1+3x=37?

goldenfox [79]

Answer:

x=12

Step-by-step explanation:

1+3x=37

First minus 1 on the left and right hand side.

1-1+3x=37-1

Whenever you move a number to the other side , the sign changes. For example, you need to move 8 to the right side. Then the sign changes from positive to negative -8.

3x=36

Divide by 3 for both sides.

x=12

Check the answer:

1+3(12)=37

37=37

4 0

3 years ago

Read 2 more answers

Which relation is a function? PLEASE HELP

Georgia [21]

Answer:

Step-by-step explanation:

for the relation to be a function then each value of x in the domain must map to exactly one unique value of y in the range

this is the case for A

in B : 3 → 2 and 3 → 8 ← not a function

in C : - 2 → 5 and - 2 → 7 ← not a function

in D : 2 → 2 and 2 → 3 and 3 → 3 and 3 → 2 ← not a function

4 0

2 years ago

Read 2 more answers

Write 170,967,413.3 in expanded form

mezya [45]

1000000000+70000000+900000+60000+7000+400+10+3+.3

8 0

3 years ago