Statics questions | Mathematics homework help


 

Question 18 of 25

1.0 Points

 

Accepted characters: aggregate, decimal top markers (date or comma), prefiguration indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in or-laws notation). NOTE: For or-laws notation, a date MUST be used as the decimal top marker. 
Complex aggregate should be in the mould (a + bi) where "a" and "b" claim to bear plainly recurrent prizes. 
For stance: {1+1i} is sound forasmuch-as {1+i} is not. {0+9i} is sound forasmuch-as {9i} is not. 

Suppose that the medium weekly hues for employees in open automotive restore shops is $450, and that the meafirm flexion for the weekly hues for such employees is $50. A exemplification of 100 such employees is chosen at haphazard. 

Find presumption that the medium of the exemplification is hither than $445. Place your retort, rounded to 4 decimal places, in the utter. For stance, 0.2345 would be a genuine beginning.   

Question 19 of 25

1.0 Points

 

Accepted characters: aggregate, decimal top markers (date or comma), prefiguration indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in or-laws notation). NOTE: For or-laws notation, a date MUST be used as the decimal top marker. 
Complex aggregate should be in the mould (a + bi) where "a" and "b" claim to bear plainly recurrent prizes. 
For stance: {1+1i} is sound forasmuch-as {1+i} is not. {0+9i} is sound forasmuch-as {9i} is not. 

Scores on a mathematics trial show to flourish a usual disposal delay medium of 65 and meafirm flexion of 15. The tutor wishes to confer a walk of “C” to wards scoring among the 60th and 70th percentiles on the exam. 

What reckoning represents the 60th percentile reckoning on the mathematics exam? Place your retort in the utter, rounded to a entire enumerate. For stance, 62 would be a genuine beginning.   

Question 20 of 25

1.0 Points

 

Accepted characters: aggregate, decimal top markers (date or comma), prefiguration indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in or-laws notation). NOTE: For or-laws notation, a date MUST be used as the decimal top marker. 
Complex aggregate should be in the mould (a + bi) where "a" and "b" claim to bear plainly recurrent prizes. 
For stance: {1+1i} is sound forasmuch-as {1+i} is not. {0+9i} is sound forasmuch-as {9i} is not. 

Suppose that the medium weekly hues for employees in open automotive restore shops is $450, and that the meafirm flexion for the weekly hues for such employees is $50. A exemplification of 100 such employees is chosen at haphazard. 

Find the medium of the sampling disposal of the mediums of medium weekly hues for exemplifications of magnitude 100. Place your retort in the utter. Do not conceive a dollar prefiguration. For stance, 123 would be a genuine beginning.   

Question 21 of 25

1.0 Points

 

Accepted characters: aggregate, decimal top markers (date or comma), prefiguration indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in or-laws notation). NOTE: For or-laws notation, a date MUST be used as the decimal top marker. 
Complex aggregate should be in the mould (a + bi) where "a" and "b" claim to bear plainly recurrent prizes. 
For stance: {1+1i} is sound forasmuch-as {1+i} is not. {0+9i} is sound forasmuch-as {9i} is not. 

A Wendy’s fast-food restaurant sells hamburgers and chicken sandwiches. On a regular weekday, the claim for hamburgers is usually arrangely delay a medium of 450 and meafirm flexion of 80 and the claim for chicken sandwiches is usually arrangely delay a medium of 120 and meafirm flexion of 30. 

How sundry chicken sandwiches must the restaurant hoard to be 99% firm of not popular out on a confern day? Place you retort, rounded to the unswerving entire enumerate in the utter. For stance, 345 would be a genuine beginning.   

Question 22 of 25

1.0 Points

 

Accepted characters: aggregate, decimal top markers (date or comma), prefiguration indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in or-laws notation). NOTE: For or-laws notation, a date MUST be used as the decimal top marker. 
Complex aggregate should be in the mould (a + bi) where "a" and "b" claim to bear plainly recurrent prizes. 
For stance: {1+1i} is sound forasmuch-as {1+i} is not. {0+9i} is sound forasmuch-as {9i} is not. 

Suppose that the medium weekly hues for employees in open automotive restore shops is $450, and that the meafirm flexion for the weekly hues for such employees is $50. A exemplification of 100 such employees is chosen at haphazard. 

Find the presumption that the medium of the exemplification is main than $460. Place your retort, rounded to 4 decimal places, in the utter. For stance, 0.2345 would be a genuine retort.   

Question 23 of 25

1.0 Points

 

Accepted characters: aggregate, decimal top markers (date or comma), prefiguration indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in or-laws notation). NOTE: For or-laws notation, a date MUST be used as the decimal top marker. 
Complex aggregate should be in the mould (a + bi) where "a" and "b" claim to bear plainly recurrent prizes. 
For stance: {1+1i} is sound forasmuch-as {1+i} is not. {0+9i} is sound forasmuch-as {9i} is not. 

Mrs. Smith's lection tabulate can interpret a medium of 175 articulation per exact delay a meafirm flexion of 20 articulation per exact. The top 3% of the tabulate is to take a proper grant. Assuming that the disposal of articulation interpret per exact are usually arrangely, what is the stint enumerate of articulation per exact a ward would bear to interpret in arrange to get the grant? Place your retort, rounded to the unswerving entire enumerate, in the utter.    When entering your retort do not use any labels or symbols. Simply furnish the numerical prize. For stance, 123 would be a genuine beginning.