Answer:
A. 637
B. 0.2240 (4 dp) = 22.4% (nearest tenth)
Step-by-step explanation:
<u>Normal Distribution</u>
Given:
<h3><u>Part A</u></h3>
Total number of bodybuilders = 1500
Therefore, the number of bodybuilders between 180 and 190 pounds is:
<h3><u>Part B</u></h3>
Answer:
pounds
Step-by-step explanation:
The customer will be charged extra if the weight of their suitcase is above 48 pounds.
Let the weight of the suitcase = w (in pounds)
Therefore, w above (greater than) 48 pounds is written mathematically as:
pounds
This is the inequality that represents w, the weight of the suitcase in pounds, that will have an extra charge.
1 yard = 36 inches
4 yards = 144 inches
Each piece is (144/5) inches long = 28.8 inches
Answer:
$39.20
Step-by-step explanation:
Since she purchased a $49 gift and uses a coupon that offers 20% off, multiply the cost by 80% (0.8)
49(0.8)=39.2
Marie will spend $39.20 on the gift after using the coupon.
Answer:
6 samples
Step-by-step explanation:
Given :
Sample size, = n
Standard deviation, = 6000
Margin of Error = 2000
Confidence interval, α = 95%
Zcritical at 95% = 1.96
n = (Zcritical * σ) / margin of error
n = (1.96 * 6000) /2000
n = 11760 / 2000
n = 5.88
n = 6 samples