The XO Group Inc. conducted a survey of 13,000 brides and grooms married in the United States and found that the average cost of
1 answer:
Answer:
0.0392,0.4709, 38083
Step-by-step explanation:
Given that XO Group Inc. conducted a survey of 13,000 brides and grooms married in the United States and found that the average cost of a wedding is $29,858
X is N(29,858, 5600)
Or is N*(0,1)
We can use std normal distribution table to get the probabilities
a) The probability that a wedding costs less than $20,000 (to 4 decimals)
=
=0.0392
b) the probability that a wedding costs between $20,000 and $30,000
=
c) For a wedding to be among the 5% most expensive, how much would it have to cost (to the nearest whole number)
=
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Answer:
Step-by-step explanation:
Set this up as ratio of vinegar to oil in fraction form:
That's what we're given. If we are looking to find how much oil he needs if he's using 9 ounces of vinegar, then 9 goes on top with the vinegar stuff and x goes on bottom as the unknown amount of oil:
Cross multiply to get
5x = 90 and
x = 18
Which you probably could do without the proportions. If he is using 5 ounces of vinegar and double that amount of oil, then it just makes sense that if he uses 9 ounces of vinegar he will double that amount in oil to use 18 ounces.
The answer will be 17 tons.
Step-by-step explanation:
Since we have given that
14 T 1,000 lb. + 2 T 1,000 lb.
As we know that
So, 14 T 1,000 lb. is given by
Similarly,
so,
2T 1,000 lb. is given by
So, 14 T 1,000 lb. + 2 T 1,000 lbs is given by
Hence, the answer will be 17 tons.