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HACTEHA [7]
3 years ago
10

Assume that John Smith is a salesperson employed by McCrackin Company. Smith's regular rate of pay is $36 per hour, and any hour

s worked in excess of 40 hours per week are paid at 1½ times the regular rate. Smith worked 42 hours for the week ended October 27. What are his total earnings for the week?
Mathematics
1 answer:
Irina18 [472]3 years ago
6 0

Answer: $1548

Step-by-step explanation:

We are told the normal rate of payment is $36 per hour

and with an excess of 40 hours the pay will be 1 and a half the normal rate(1.5)

And John works for 42hours

For first we know John worked for an excess of 2 hours

And calculating his pay for 40hours of the normal rate that week, we multiply $36 by 40 which will give $1440

Then the extra 2 hours, the new pay rate will be $36 multiplied by 1.5 which will give $54 per hour

And for the extra 2 hours, John will get extra $54 multiplied by 2 which will give $108

Adding both $1440 and $108, we will get $1548

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The probability that it will rain tomorrow is 0.65
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According to a study done by Wakefield Research, the proportion of Americans who can order a meal in a foreign language is 0.47.
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Answer:

Probability that the proportion of Americans who can order a meal in a foreign language is greater than 0.5 is 0.19766.

Step-by-step explanation:

We are given that according to a study done by Wake field Research, the proportion of Americans who can order a meal in a foreign language is 0.47.

Suppose a random sample of 200 Americans is asked to disclose whether they can order a meal in a foreign language.

<em>Let </em>\hat p<em> = sample proportion of Americans who can order a meal in a foreign language</em>

The z-score probability distribution for sample proportion is given by;

          Z = \frac{ \hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p = sample proportion

p = population proportion of Americans who can order a meal in a foreign language = 0.47

n = sample of Americans = 200

Probability that the proportion of Americans who can order a meal in a foreign language is greater than 0.5 is given by = P( \hat p > 0.50)

  P( \hat p > 0.06) = P( \frac{ \hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } } > \frac{0.5-0.47}{\sqrt{\frac{0.5(1-0.5)}{200} } } ) = P(Z > 0.85) = 1 - P(Z \leq 0.85)

                                                               = 1 - 0.80234 = <u>0.19766</u>

<em>Now, in the z table the P(Z  </em>\leq <em>x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 0.85 in the z table which has an area of 0.80234.</em>

Therefore, probability that the proportion of Americans who can order a meal in a foreign language is greater than 0.5 is 0.19766.

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4 years ago
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