I got D.
There's a few ways to solve it; I prefer using tables, but there are functions on a TI-84 that'll do it for you too. The logic here is, you have a standard normal distribution which means right away, the mean is 0 and the standard deviation is 1. This means you can use a Z table that helps you calculate the area beneath a normal curve for a range of values. Here, your two Z scores are -1.21 and .84. You might notice that this table doesn't account for negative values, but the cool thing about a normal distribution is that we can assume symmetry, so you can just look for 1.21 and call it good. The actual calculation here is:
1 - Z-score of 1.21 - Z-score .84 ... use the table or calculator
1 - .1131 - .2005 = .6864
Because this table calculates areas to the RIGHT of the mean, you have to play around with it a little to get the bit in the middle that your graph asks for. You subtract from 1 to make sure you're getting the area in the middle and not the area of the tails in this problem.
Answer:
Step-by-step explanation:
The ratio of the side lengths (AB) and (BC) is given. One is also given an expression for the side lengths of each of these sides. Set up a proportion to describe this scenario, then solve using cross products;
Substitute,
Cross products,
Inverse operations,
Answer:
The cost of one bear is <u>$47,000</u>.
Step-by-step explanation:
The question is incomplete and the data is missing so the complete question with data is below with attached files:
To celebrate there 125 anniversary, a company in Germany produced 125 very expensive teddy bears. The bears,known as the "125 karat teddy bears", are made mohair,silk and gold thread and have diamond and sapphire eyes.
The chart shows the approximate cost of " 125 teddy bears". Based on the pattern, how much does one bear cost?
Now, to get the cost of one bear.
So, we solve it by using unitary method:
If 4 bears cost = $188,000.
Then 1 bear cost =
Thus, cost of one bear is $47,000.
Now, we check it by using another pattern of the data:
If 7 bears cost = $329,000.
Then 1 bear cost =
Hence, the cost of one bear is $47,000.
Therefore, the cost of one bear is $47,000.
