Answer:
b) 95%
Step-by-step explanation:
We have been given that scores on an approximately bell shaped distribution with a mean of 76.4 and a standard deviation of 6.1 points. We are asked to find the percentage of the data that is between 64.2 points and 88.6 points.
First of all, we will find z-scores of each data point as:




Let us find z-score corresponding to normal score 88.6.



To find the percentage of the data is between 64.2 points and 88.6 points, we need to find area under a normal distribution curve that lie within two standard deviation of mean.
The empirical rule of normal distribution states that approximately 95% of data points fall within two standard deviation of mean, therefore, option 'b' is the correct choice.
<span>The answer to your question is l = 20 ft; w = 10 ft</span><span />
Answer:
Dylan will not have enough money. He needs $22.65 but only has $22.50
Step-by-step explanation:
If Dylan's mom replaces each dime with a quarter, then Dylan will have 90 quarters.
1 Quarter = $0.25
90 x .25 = $22.50
The game costs $20.98 plus 8% sales tax
So 20.98 x .08 = <em>$</em><em>1.6784</em>
20.98 + 1.6784 = $22.65
<em>Dylan</em><em> </em><em>will</em><em> </em><em>not</em><em> </em><em>have</em><em> </em><em>enough</em><em> </em><em>money</em><em> </em><em>because</em><em> </em><em>he</em><em> </em><em>only</em><em> </em><em>has</em><em> </em><em>$</em><em>2</em><em>2</em><em>.</em><em>5</em><em>0</em><em> </em><em>when</em><em> </em><em>he</em><em> </em><em>needs</em><em> </em><em>$</em><em>2</em><em>2</em><em>.</em><em>6</em><em>5</em>
Answer:
A)
Hope that helps!
Step-by-step explanation: