To convert a percent to a decimal, you divide by 100.
60% = 0.60
If x is the unknown number, the word is means equal
84 = 0.60 * x
Divide both sides by 0.60
84/0.60 = (0.60/0.60)* x = x
140 = x
Answer: No, the data provided is not sufficient evidence to conclude that the mean height of women in the city differs from the national mean.
Step-by-step explanation:
Since we have given that

Mean height = 61.5 inches
Standard deviation = 4.4 inches
n = 100
So, test statistic value would be

At 10% level of significance, in two tail test ,
z = 1.28
Since 1.28 > -2.727
So, we will accept the null hypothesis.
Hence, No, the data provided is not sufficient evidence to conclude that the mean height of women in the city differs from the national mean.
Answer:
I think the answer is 1/5
Step-by-step explanation:
Add up the total number of jellybeans, 20 + 45 + 30 + 5 = 100.
Divide the number of watermelon jellybeans by the total: 20/100 and reduce the fraction to 1/5.
Hope this help you! :)
Answer: D. $70.74
Step-by-step explanation:
22.5 times $3.06 = 68.85 (that's how much she spent on gas)
$68.85 + $1.89 (how much she spent on her drink) = $70.74 (her total at the gas station)
Answer:
3 hours
Step-by-step explanation:
25x = 325-250
25x = 75
x = 75/25
x= 3 hours