the means numbers of minutes it takes to respond phone survey 8.5, with standard deviation of 1.2 minus. the distribution is approx normal. find probability that randomly selected respondents. a) takes more than 10.5 minutes b) takes less than 6.3 mins

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Q: d) 85% of all students finish the activity in less than secon Submit Question

A: X~N( μ = 38.6 , ? = 6.3 ) μ = 38.6 , ? = 6.3 Z-score =( x - μ )/?

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Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: mean=145.2cm S.D=2.2cm

Q: Assume that people playing World of Warcraft in a week has a normal distribution with a mean of 54…

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Q: Claim: The mean pulse rate (in beats per minute) of adults males is equal to 69 bpm. For a random…

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Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

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Q: The number of cars running a red light in a day, at a given intersection, possesses a distribution…

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Q: ​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

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Q: Assume that people playing World of Warcraft in a week has a normal distribution with a mean of 54…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.