Answer:
98% Confidencce Interval is ( 3030.6, 7467.4 )
Step-by-step explanation:
Given that:
Sample size 71
Sample size 31
Sample mean 41628
Sample mean 36,379
Population standard deviation = 4934
Population standard deviation 4180
At 98% confidence interval level, the level of significcance = 1 - 0.98 = 0.02
Critical value at
The Margin of Error =
=
=
=
= 2218.40
The Lower limit =
= ( 41628 - 36379 ) - ( 2218.40)
= 5249 - 2218.40
= 3030.6
The upper limit =
= ( 41628 - 36379 ) + ( 2218.40)
= 5249 + 2218.40
= 7467.4
∴ 98% Confidencce Interval is ( 3030.6, 7467.4 )
The equation is 40 ÷ 18 = a and the answer is about $2.22 per stamp
Football is green, so 42% of the people like football.
210 people like football.
To find the total number of people surveyed, divide 210 by 42%:
210 / 0.42 = 500
500 people were surveyed.
Answer:
1.25 litros.
Step-by-step explanation:
Dado que Demetrio compró dos litros de leche, y luego utilizó 3 cuartos de litro en un postre, para determinar cuánta leche le quedó se debe realizar el siguiente cálculo matemático:
2 - 3/4 = X
2 - 0.75 = X
1.25 = X
Así, tras utilizar 3 cuartos de litro de leche en un postre, a Demetrio le quedaron 1.25 litros de leche.
Writing the information in form of ratio
Three point basket: Three point tries
3 : 4
27 : x
Think about multiplication, how many 3s do you need to make 27?
It's 27 ÷ 3 = 9
Because you need 9 lots of 3, then to make it proportional, you'd need 9 lots of 4
9 × 4 = 36
Three-points tries is 36 points