Johnny now has 90 so Jeana did not take 25 she only took 10
Answer:
2 right and 5 down
Step-by-step explanation:
Answer:
gas = $0.23, electricity = $0.10
Step-by-step explanation:
Answer:
The value of
is 16.
Step-by-step explanation:
The given expression is
.
Put x = 2 in the above expression as follows :

Hence, the final answer is 16.
Answer: 2172
Step-by-step explanation:
Formula to find the sample size n , if the prior estimate of the population proportion(p) is known:
, where E= margin of error and z* = Critical z-value.
Let p be the population proportion of adults have consulted fortune tellers.
As per given , we have
p= 0.20
E= 0.02
From z-table , the z-value corresponding to 98% confidence interval = z*=2.33
Then, the required sample size will be :
Hence, the required sample size = 2172