Conclusion is that there is sufficient evidence to reject the claim that the proportion of people who favor the use of oxygenated fuels year around to reduce air pollution is 60%.

Step-by-step explanation:

We are given;

Population proportion; p = 60% = 0.6

Sample mean: x¯ = 315

Sample size; n = 500

Significance level = 0.09

Defining the hypothesis, we have;

Null Hypothesis; H0: p = 0.6

Alternative hypothesis; Ha: p > 0.6

z-score formula in this case is;

z = (x¯ - np)/√(np(1 - p))

Plugging in the relevant values;

z = (315 - (500 × 0.6))/√(500 × 0.6(1 - 0.6))

z = 1.72

From z-distribution table, the p-value at z = 1.72 is;

1 - P(Z ≤ z-score)

This gives:

p-value = 1 - 0.95728 = 0.04272

Thus p-value is less than the significance level of 0.09, thus we will reject the null hypothesis and conclude that there is sufficient evidence to reject the claim that the proportion of people who favor the use of oxygenated fuels year around to reduce air pollution is 60%.

6 0

3 years ago

5/6 (24x - 18) + 5<br><br> Simplify

Inessa05 [86]

I got 20x-10 that the answer 100% positive

3 0

4 years ago

Farmer grows 128 red tomato plants and 102 yellow tomato plants. each plant produces about 32 tomatoes.

AlekseyPX

1: 128+102= 230
2: 230x32= $7360

3 0

3 years ago

Read 2 more answers

The mayor of a town places a map of the town on a coordinate grid with Town Hall at the point (0,0) and with each unit represent

Alexxandr [17]

The town will spend $202.5 on laying the pipes.

Step-by-step explanation:

Given points are;

(-2,-4) and (6,-5)

$x_1=-2, \ \ \ y_1=-4\\x_2=6,\ \ \ \ y_2=-5\\$

Distance of two points is;

$Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\Distance=\sqrt{(6-(-2))^2+(-5-(-4))^2} \\Disatnce=\sqrt{(6+2)^2+(-5+4)^2} \\Distance=\sqrt{(8)^2+(-1)^2}\\Distance=\sqrt{64+1} \\Distance=\sqrt{65} \\Distance= 8.1 \units$

As one unit represent a mile, therefore,

Distance = 8.1 miles

Cost of laying 1 mile = $25

Cost of laying 8.1 miles = 8.1*25 = $202.5

The town will spend $202.5 on laying the pipes.

Keywords: distance, points

Learn more about distance at:

#LearnwithBrainly

7 0

3 years ago