Question
Understudies at a significant college are grumbling of a genuine lodging crunch. A considerable lot of the college's understudies, they gripe, need to drive too
Understudies at a significant college are grumbling of a genuine lodging crunch. A considerable lot of the college's understudies, they gripe, need to drive too far to even think about tutoring on the grounds that there isn't sufficient lodging close to grounds. The college authorities react with the accompanying data: the mean distance drove to class by understudies is
17.5
miles, and the standard deviation of the distance drove is
3.3
miles.
Accepting that the college authorities' data is right, finished the accompanying articulations about the dissemination of drive distances for understudies at this college.
(a) According to Chebyshev's hypothesis, at any rate of the drive distances lie between
10.9
miles and
24.1
miles.
(b) According to Chebyshev's hypothesis, in any event
36%
of the drive distances lie between
miles and
miles. (Round your response to 1 decimal spot.)
In the course of recent months, a grown-up understanding has been treated for tetany (serious muscle fits). This condition is related with a normal all out calcium level under 6 mg/dl. As of late, the patient's complete calcium tests gave the accompanying readings (in mg/dl). Accept that the number of inhabitants in x qualities has an around ordinary dissemination.
9.9 9.4 10.3 8.9 9.4 9.8 10.0 9.9 11.2 12.1
Utilize a number cruncher with mean and test standard deviation keys to discover the example mean perusing and the example standard deviation s. (in mg/dl; round your responses to two decimal spots.)
''28''
Track down a 99.9% certainty stretch for the populace mean of absolute calcium in this current patient's blood. (in mg/dl; round your response to two decimal spots.)
In view of your outcomes to a limited extent (b), do you think this patient actually has a calcium insufficiency? Clarify
A fitness test is intended to quantify initiative capacities of the guineas pigs. Assume that the scores on the test are ordinarily circulated with a mean of
570
also, a standard deviation of
125
. The people who surpass
800
on this test are viewed as possible pioneers. What extent of the populace are viewed as expected pioneers? Round your response to at any rate four decimal spots.
The measure of cash spent week by week on cleaning, support, and fixes at a huge eatery was seen throughout a significant stretch of time to be around ordinarily conveyed, with mean ? = $601 and standard deviation ? = $45.
(a) If $646 is planned for one week from now, what is the likelihood that the real costs will surpass the planned sum? (Round your response to four decimal spots.)
(b) How much ought to be planned for week by week fixes, cleaning, and support so the likelihood that the planned sum will be surpassed in a given week is just 0.12? (Round your response to the closest dollar.)
$
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