The high temperature x (in degrees centigrade) during winter-time in washington
1 answer:
A suitable probability calculator can tell you the desired temperature is about 26.2 °C.
_____
The invNorm function on this calculator gives the x-value below which the probability distribution has the given area. Since you want the x-value for the area above being 0.3, the area below that x-value will be 1-0.3 = 0.7.
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Answer:
The proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars is 0.0099
Step-by-step explanation:
A set of electric toothbrush prices are normally distributed with a mean of 87 dollars and a standard deviation of 8 dollars.
Standard deviation =
We are supposed to find proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars i.e.P(104.60<x<108.20)
At x = 104.60
Z= 2.2
At x=108.20
Z= 2.65
Refer the z table for p value :
P(x<108.20)-P(x<104.60)=P(Z<2.65)-P(Z<2.2)=0.9960-0.9861=0.0099
Hence The proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars is 0.0099
here you go -brainliest
Answer: 5 hrs
<u>Explanation:</u>
Jasper: per hr
Yolanda: per hr
Together: per hr
Jasper + Yolanda = Together
+
=
+
=
3x + 21 = 7x
21 = 4x
= x