Answer:
25 males and 8 females.
Step-by-step explanation:
If x is the number of males and y = number of females we have the system:
x + y = 33
x - y = 17 Adding:
2x = 50
x = 25
so y = 33 - 25 = 8.
Answer:
29.5+/-1.11
= ( 28.39, 30.61)
Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean x = 29.5
Standard deviation r = 5.2
Number of samples n = 59
Confidence interval = 90%
z-value (at 90% confidence) = 1.645
Substituting the values we have;
29.5+/-1.645(5.2/√59)
29.5+/-1.645(0.676982337100)
29.5+/-1.113635944529
29.5+/-1.11
= ( 28.39, 30.61)
Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)
Answer:
10 inches
Step-by-step explanation:
Answer:
12.44
Step-by-step explanation:
Hope it helps
Answer:
Bailey made a total of $145 on Thursday
Step-by-step explanation:
Step 1
Derive an expression for Bailey's total income on Thursday as follows;
A=F+(R×S)
where;
A=total income earned
F=fixed income per day
R=commission rate
S=total sales
In our case;
A=unknown
F=$90 per day
R=11%=11/100=0.11
S=$500
Step 2
Substitute the values and solve;
A=90+(11% of $500)
A=90+(0.11×500)
A=90+55=145
A=$145
Bailey made a total of $145 on Thursday
