Answer:
The value of 27, because it’s greater than 26.7 and less than 29.3.
Step-by-step explanation:
You should find the confidence Interval at 95%
The formula to apply is;
C.I= x±z*δ/√n
where C.I is the confidence interval, x is the mean of the sample, z is the z* value from the standard normal distribution for 95% confidence interval, δ is the standard deviation and n is the sample size
Substitute values in the formula
Find δ/√n
Calculate z*δ/√n
C.I= 28±1.2652
Upper limit is = 28+1.2652=29.2625
Lower limit is =28-1.2652=26.7348
Solution
The value 27 is within 95% confidence interval because it is greater than 26.7 and less than 29.3
Answer:
216mx meters
Step-by-step explanation:
m is in minutes so convert it in hours = 60m hrs
Speed is in metres per second, convert it in kilometers per hour= 18x/5
Now we’ve time and speed, put it in the formula
Distance = speed x time
= 18x/5 x 60m
= 216mx meters
Hope it helps
100% of something is basically the same as saying "1 times that number". This is because 100% = 1.0 or just 1. So the number will not change if you take 100% of it.
Any percent smaller than 100% will convert to a decimal number smaller than 1, which makes the final result smaller. Conversely, any percent larger than 100% is going to convert to a decimal larger than 1, making the final result larger.
The percent 175% converts to the decimal form 1.75 after you move the decimal to the left 2 spots. Multiply this value by last year's headcount (320) and we get...
175% of 320 = 1.75*320 = 560
Answer: Choice C) 560