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Michelle purchased 25 audio files in January. In February she purchased 40 audio files. Find the percent increase in the number

Tcecarenko [31]

The answer is 60% increase

3 0

3 years ago

A recent national survey indicated that 73 percent of respondents try to include locally grown foods in their diets. A 95 percen

lilavasa [31]

Answer:

Correct option is:

"Less than 75% of all people in the country try to include locally grown foods in their diets."

Step-by-step explanation:

A hypothesis for the proportion of people who include locally grown foods in their diets can be defined as:

H₀: The proportion of people who include locally grown foods in their diets is p.

Hₐ: The proportion of people who include locally grown foods in their diets is difference from p.

The decision rule can be based on the 95% confidence interval.

If the confidence interval consists the hypothetical value of the true proportion then the null hypothesis will be accepted or else the null hypothesis will be rejected.

The 95% confidence interval for the proportion of all people in the country who try to include locally grown foods in their diets is given as (0.70, 0.76).

This interval implies that there is 0.95 probability that the true proportion of people who include locally grown foods in their diets is between 70% and 76%.

Assuming that the claim made was supported by the 95% confidence interval.

The claim should be:

Less than 75% of all people in the country try to include locally grown foods in their diets.

Because the 95% confidence interval defines the range of the true proportion as 70% to 76%. Most of the values are below 75%.

Thus, the correct option is:

"Less than 75% of all people in the country try to include locally grown foods in their diets."

3 0

4 years ago

Read 2 more answers

7. The Waltz family are planning to repave their driveway. The length of their driveway is 7 feet

SVEN [57.7K]

Answer:

Dimensions Of The Driveway is Length=16 Feet & Width=9 Feet

Step-by-step explanation:

According To Question,We Have Given

Length of Driveway Is 7 feet longer than its Width

Let the Width be X Feet . So Length is (X+7)Feet

Area Of Driveway = 144 sq. Feet

X * (X+7) = 144

$X^{2}$ +7X=144

$X^{2}$ +16X-9X-144=0

X(X+16)-9(X+16)=0

X = -16 & +9 (Neglect -16 because Width=X, that Can Never be in Negative)

So X = +9

Now Put this value, We get Width = 9 Feet & Length =16 Feet

6 0

4 years ago

What is the solution to the system of equations Y=4x+14 Y=3x+15

Zina [86]

Step-by-step explanation:

y=4x+14

y=3x+15

-------------

y=7x+29

------------

7x+29

7x+29=0

7x=-29

7x/7=-29/7

x=-29/7

4 0

3 years ago

Errol's bike ride from home to school can be modeled by the equation d(t) = -4t+2, where d(t) is

8_murik_8 [283]

Answer:

Option (2).It has a vertical translation by 2 units in the positive direction.

Step-by-step explanation:

Given question is not complete: find the complete question with attachment

Errol's bike ride can be modeled by the equation,

$d(t)=-\frac{1}{4}t+2$

Slope of the given equation = $-\frac{1}{4}$ which shows the rate of change of distance from Errol's house

Y-intercept = 2, shows the distance of the school from Errol's house

Let the equation that represents the distance of Daniel's home from the school is,

y = mt + b

Since speed of Daniel is equal to the speed of Errol, slopes of both the equations will be same.

Since y-intercept 'b' represents the distance from his home, b = 4

Now the equation will be,

$d(t)=-\frac{1}{4}t+4$

Therefore, the graph representing the Daniel's equation will have a vertical translation by 2 units in the positive direction.

3 0

3 years ago