Question
Q5) Garry got a new job. In his old job, he was working in Texas, where in his field the average salary is 16 dollars/hr
Q5)
Garry got a new job. In his old job, he was working in Texas, where in his fieldthe average salary is 16 dollars/hr with standard deviation of 4. In his new job in Warwick, where in his field the average salary is 15 dollars/hr with a variance of 4.
Garry was earning 17 dollars/hr in Texas, and now is getting 16 dollars/hr in Warwick.
- With Garry's old salary in Texas, what was his percentile? ___________
- With Garry's new salary in Warwick, what is his new percentile? __________
- Is Garry's new salary in a higher percentile? Yes, or No? Explain __________
Tables (attached) | Z score | Area between mean and Z |
Table 1 | 0 to 0.89 | 0.0000 to 0.3133 |
Table 2 | 0.90 to 1.94 | 0.3159 to 0.4738 |
Table 3 | 1.95 to 2.99 | 0.4744 to 0.4986 |
Table 4 | 3.00 to 4.00 | 0.4987 to 0.49997 |
Q6)
Final grades in a second-year course have a sample mean=60, standard deviation=7. If there were 70 students in the course, approx. how many students scored between 70 and 80?
Tables (attached) | Z score | Area between mean and Z |
Table 1 | 0 to 0.89 | 0.0000 to 0.3133 |
Table 2 | 0.90 to 1.94 | 0.3159 to 0.4738 |
Table 3 | 1.95 to 2.99 | 0.4744 to 0.4986 |
Table 4 | 3.00 to 4.00 | 0.4987 to 0.49997 |
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