Martian potatoes begin to sprout very quickly after planting. Suppose X is the number of days after planting until a Martian potato sprouts. Then X has the following probability density function:
a) What is the probability that X is within 1 standard deviation of its expected value?
b) What is the probability that
a) From the given information, the probability density function for X is,
The probability that X is within 1 standard deviation of its expected value is 0.8810 and it is calculated below:
When a cold drink is taken from a refrigerator, its temperature is 5 degree C. After 25 minutes in a 20 degree C room its temperature has increased to 10 degree C. What is the temperature of the drink after 50 minutes?
How many minutes are there in hours?
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How to write in scientific notation?