2) Simplify: a(0.5 + 8)
1 answer:
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Answer:
1. A: 0.25; B: 0.03; C: 1.41; D: -0.28
2. A: 0.39; B: 0.06; C: 40.30; D: 21.81
Step-by-step explanation:
For CDF lookups, we used the Excel NORMDIST(x, mean, stdev, TRUE) function. For inverse CDF lookups, we used the NORMINV(x, mean, stdev) function.
Each of these functions works with the area under the curve from -∞ to x, so for cases where we're interested in the upper tail, we subtract the probability from 1, or subtract the x value from twice the mean.
For question 1, we computed the Z values in each case. The NORMDIST function works directly with x, mean, and standard deviation, so does not need the z value.
<h3>The salary of Perry if inflation is 6.5 % is $ 32617.475</h3>
<em><u>Solution:</u></em>
Given that,
Perry made $34,885 this year
The inflation rate was 6.5 percent
To find: Salary worth if inflation rate was 6.5 percent
From given,
Inflation rate = 6.5%
Therefore,
Worth of salary due to inflation = 100 % - 6.5 % = 93.5 %
Money earned in this year by Perry = $ 34, 885
Therefore,
Worth of Perry salary due to inflation = 34,885 x 93.5%
Thus the salary of Perry if inflation is 6.5 % is $ 32617.475
<u>Answer</u>:
The resale value after three years = $ 632.8125
<u>Explanation</u>:
Given the laptop purchase for $1500
Therefore, the cost price = $1500
According to the question, the resale value decreases by 25%,
Then after three years, the resale value is
Resale Value =
Substituting the values,
Resale Value =
Resale Value =
Resale Value =
Resale Value = $632.8125
Therefore, the resale value after three years = $ 632.8125