Let X be the number of boys in n selected births. Let p be the probability of getting baby boy on selected birth.
Here n=10. Also the male and female births are equally likely it means chance of baby boy or girl is 1/2
P(Boy) = P(girl) =0.5
p =0.5
From given information we have n =10 fixed number of trials, p is probability of success which is constant for each trial . And each trial is independent of each other.
So X follows Binomial distribution with n=10 and p=0.5
The probability function of Binomial distribution for k number of success, x=k is given as
P(X=k) = 
We have to find probability of getting 8 boys in n=10 births
P(X=8) = 
= 45 * 0.0039 * 0.25
P(X = 8) = 0.0438
The probability of getting exactly 8 boys in selected 10 births is 0.044
Answer:
Yes
Step-by-step explanation:
The line of best fit is used in linear regression models to make predictions, the line of best fit gives the relationship between the dependent and independent variables by obtaining the Coefficient of correlation. The Coefficient of correlation is a value which ranges from - 1 to 1. With values close to either - 1 or 1 depicting a strong negative and positive relationship respectively. Hence, with a correlation Coefficient of - 0.86, which signifies a strong negative relationship, then we can go ahead and make prediction using the model.
Answer:
$110
Step-by-step explanation:
we know
selling price = cost price + profit.
given
selling price of TV = $121
profit = 10%of cost
selling price of TV = cost of TV + 10%cost of TV
121 = cost of TV + 10/100 cost of TV
=> 121 = (100 cost of TV + 10 cost of TV)/100
=> 121*100 = 110 cost of TV
=> cost of TV = 121*100/110 = 110
Thus, cost price of TV is $110(option A)
1) $65 ÷ $6.50 = $10
2) Check Work: $10 × $6.50 = $65
$10 is your missing factor :)
Hope This Helps :)
Answer:
1)PT = 21 units
2)Option D
3)Option A
4)∠EFG = 2(24) +15 = 63 degrees
∠GFH= 4(24) +21 = 117 degrees
5) circumference = 21.98 cm
Step-by-step explanation:
1) As the T is midpoint, PT is equal to TQ in magnitude.
Thus, 
x=5.
Thus, PT = 4(5) + 1 = 21
2) The planes XTS and VRS intersect in the line SW, and the intersection is perpendicular.
3)For a line to be defined, it must have 2 points, start and end.
The option A) is not defined properly, so incorrect
4)As the angles are linear pair, their sum is 180 degrees.
Thus, 
n = 
∠EFG = 2(24) +15 = 63 degrees
∠GFH= 4(24) +21 = 117 degrees
5) diameter = 7 cm
radius = 3.5 cm
circumference = 
