I don’t get this lol...really need help with this!
1 answer:
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Answer:
16.35
Step-by-step explanation:
Using an inverse normal distribution, we can calculate the z score given the percentile, which can then be used to find our value.
First, we can use an inverse normal distribution calculator to figure out that the z score given the 75th percentile is 0.674.
Next, we know that the z score is (observed value - mean) / standard deviation. We can plug our values in to get
Rounding, we get x = 16.35 as our answer
Answer:
Step-by-step explanation:
According to the given information,
- Pairs of black pants = 2
- Pair of brown pants = 1
- Pairs of blue pants = 2
Then, total pairs of pants = 2 + 1 + 2 = 5
Similarly,
- Pink T-shirts = 2
- Blue T-shirts = 2
Then, total number of T-shirts = 4
This gives us the total nunber of clothing articles with Jenny, i.e.,
Total pairs of pants + Total number of T-shirts
= 5 + 4
= 9
Now, the probability of pulling out a pair of black pants & a blue T-shirt will be:
Total pairs of black pants + Total nunber of blue T-shirts/Total clothing articles
= 2 + 2 / 9
= 4/9