In a statistics class, the average grade on the final examination was 75 with a standard deviation of 5. Use Chebyshev's theorem to answer the following questions.
?
a.At least what percentage of the students received grades between 50 and 100?b.
Determine an interval for the grades that will be true for at least 70% of the students. (Hint: First, compute the Z-score.)
What will be an ideal response?
| a. | 96% |
| b. | 75 ± (1.826)(5) = 65.87 to 84.13 |
You might also like to view...
Which of the following is true about the Paris Convention of 1883?
A) It allows an applicant from one member nation to apply for a trademark in another member nation even if the applicant does not own the mark in the applicant's home nation. B) It grants automatic patent protection in all member nations once a patent is granted in one member nation. C) It grants automatic trademark protection in all member nations once a trademark is granted in one member nation. D) The requirement to mark copyrighted works with a is eliminated. E) Both A and B are true.
A breach of contract always discharges the injured party from performance under the contract
a. True b. False Indicate whether the statement is true or false
The University Store, Inc. is the major bookseller for four nearby colleges. An income statement for the first quarter of the year is presented below: University Store, Inc.Income StatementFor the Quarter Ended March 31Sales $800,000Cost of goods sold 560,000Gross margin 240,000Selling and administrative expenses Selling$100,000 Administrative 110,000 210,000Net operating income $30,000 On average, a book sells for $40.00. Variable selling expenses are $3.00 per book; the remaining selling expenses are fixed. The variable administrative expenses are 5% of sales; the remainder of the administrative expenses are fixed. If 25,000 books are sold during the second quarter and this activity is within the relevant range, the company's expected contribution margin
would be: A. $300,000 B. $175,000 C. $875,000 D. $65,000
In Parish v. ICON, where a person was severely injured when jumping on a trampoline and sued its maker and the maker of a safety net for failure to warn, the Iowa high court held that:
a. the makers had no duty to warn because the danger was obvious b. the makers had a poorly designed set of instructions c. the case could be dismissed because the warnings were adequate d. produced products that should never have been placed on the market because they are so dangerous that warnings are unhelpful e. none of the other choices