In order to determine whether or not there is a significant difference between the mean hourly wages paid by two companies (of t
he same industry), the following data have been accumulated. Company A Company B Sample size 80 60 Sample mean $16.75 $16.25 Population standard deviation $1.00 $.95 A point estimate for the difference between the two population means is____________.
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Answer: C.
Step-by-step explanation:
If 't' represents the number of hours Joanne tutors and 'r' represents the number of hours she works as a receptionist.
Then the total hours she can work=t+r
Since she can work up to 25 hours.
Thus
If she earns $25 per hour by tuition and $ 12 per hour by working as a receptionist .
Then her total earning =$
Since she must earn $200.
Then .
Therefore, the required system of inequality will be
Answer:
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If the ratio of girls to boys in a class is 3:5, the fraction of the class that are girls is...
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