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Marat540 [252]
3 years ago
15

Suppose that in a large class, the instructor announces that the average grade on an exam is 75. Which is more likely to be clos

er to 75.
The exam grade of a randomly selected student in the class or the mean exam grade of a sample of 10 students? Explain your an​
Mathematics
1 answer:
mario62 [17]3 years ago
8 0

The mean of 10 randomly selected students is definitely more likely to be closer to 75. 10 randomly selected students to include information and are more like to reflect the class’s scores. Consider an extreme example. Seventy-five students in a class of 100 earned perfect scores. The other 25 earned zeros. The average score of the class would be 75. A sample of 10 random students would almost certainly include more 100s then 0s, but both would be included in the sample. The mean of this samples score is closer to 75 than any individuals.

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Determine two compatible numbers to use to estimate the quotient. 5071/62
Sav [38]
5071 can be represents by 5000 and 62 by 60

estimate  is 5000 / 60  = 500/6 = about 83
5 0
4 years ago
Find the equation of the circle.
elena-s [515]

Answer:

Step-by-step explanation:

radius=√((15-14)²+(17-17)²)=1

eq. of circle is (x-14)²+(y-17)²=1²

4 0
4 years ago
Read 2 more answers
The truth table represents statements p, q, and r. p q r q ∧ r A T T T T B T T F F C T F T F D T F F F E F T T T F F T F F G F F
nignag [31]

Solution:

q ∧ r : q and r

q      r        q∧r

T      T         T

T       F          F

F       T          F

F        F          F

p ∨ (q∧r)

p OR (q AND r)

p          q∧r          p∨(q∧r)

F           T∧  T=T      T

F            F∧T = F      F

F             T ∧ F=F      F

F             F ∧ F =F      F

If P is false , The row which represents  when p ∨ (q ∧ r) is true is →→F T T T

Which is Option E.    

8 0
3 years ago
Read 2 more answers
Kevin and Randy Muise have a jar containing 85 ​coins, all of which are either quarters or nickels. The total value of the coins
beks73 [17]
Let the number of quarter be x and that of nickels be y
total number of coins will be:
x+y=85

thus
x=85-y.........i

total amount of money will be:
0.25x+0.05y=14.25....ii

substituting i in ii we get:
0.25(85-y)+0.05y=14.25
21.25-0.25y+0.05y=14.25
7=0.2y
y=7/0.02
y=35

thus
x=85-35=50
the number of quarters was 50 and that of nickels was 35
8 0
3 years ago
A triangle has an area of 60 square units. Its height is 12 units. What is the length of its base?
Hoochie [10]
Area=1/2 times base times height
area=60
height=12
60=1/2 times base times 12
divide both sides by 12
5=1/2 times base
multipy both side sby 2
10=base
10 units=base
6 0
4 years ago
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