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kramer
3 years ago
13

The table shows the minutes students spent studying for their history exam and the scores they received.

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
6 0
Is there a graph maybe post a picture??
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In the balcony of an auditorium, there are 20 seats in the first row, 22 seats in the second row and 24 seats in the third row.
JulsSmile [24]

Answer:

is two more than the row before

Step-by-step explanation:

i hope i help\

7 0
3 years ago
A random sample of 450 vacationers in a huge luxury resort showed that 150 were business executives. We want to create a 95% con
Zolol [24]

Answer:

p(s) = 0,33

Step-by-step explanation:

n = 450

p₀ = 150/450       p₀ = 0,33      then    q₀  = 0,67

n*p₀ = 0,33*450  =  150

n*q₀  = 0,67*450 = 301

n*p₀  and n*q₀   more than 10, we can approximate  the binomial to a Normal Distribution Distribution

a) p - p₀  = z(c) * √ (p₀q₀)/n

z(c) =  ??

CI   95 %    then α = 5 %    α = 0,05      α/2 = 0,025

z(c) = 1,96

p  =  p₀  ±  z(c) * √ (p₀q₀)/n

p  = 0,33 ± 1,96 * 0,022

p =  (  0,33 - 0,04 ;  0,33 +  0,04

p = ( 0,29  ; 0,37 )

The value of the center of the confidence Interval is 0,33

p(s) = 0,33

7 0
3 years ago
Suppose a car dealer receives a profit of $500 for each mid-sized car m sold and $750 for each sport-utility vehicle s sold. The
valkas [14]

Answer:

\boxed{\text{Four}}

Step-by-step explanation:

            500m = profit on mid-sized cars

             750s = profit on SUVs

500m + 750s = total profit  

You have two conditions:

(1) 500m + 750s ≥ 3500

(2)                   m ≥ 2s

Let s = 2

Check condition (1)

500m + 750 × 2 ≥ 3500

   500m + 1500 ≥ 3500

               500m ≥ 2000

                      m ≥ 4

Check condition (2)

(2) m ≥ 2 × 2

      m ≥ 4

\text{The dealer must sell }\boxed{\textbf{four}}\text{ mid-sized vehicles per month}}

Check:

500 × 4 + 750 × 2 ≥ 3500          4 ≥ 2 × 2

       2000 + 1500 ≥ 3500          4 ≥ 4

                   3500 ≥ 3500

OK.

3 0
3 years ago
Read 2 more answers
I WILL MARK BRAINLIST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Kisachek [45]

Answer:

(a) 30 & younger (no facial hair are 1,2,4,9. with facial hair are 10,12,14)

older than 30 (no facial hair are 3,4,8 . with facial hair are 6,7,11,13,15)

3 0
3 years ago
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The temperature is 8°F. It is expected to fall at 5° each hour for the next several hours. In how many hours will the temperatur
Natalija [7]

Answer:3 hours

Step-by-step explanation:8-5=3, 3-5=-2, -2-5=-7

7 0
3 years ago
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