Entries by Grace Wahito

In a survey of a group of​men,the heights in the​20-29age group

March 11, 2020 in /by

In a survey of a group of​men,the heights in the​20-29age group were normally​distributed,with a mean of  67.2 inches and a standard deviation of  2.0 inches. A study participant is randomly selected. Complete parts​ (a) through​ (d) below. ​(a) Find the probability that a study participant has a height that is less than  65 inches. The probability that the study participant […]

 

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n a sample of 784 adults, 258 said that they liked sugar cereals

March 11, 2020 in /by

n a sample of 784 adults, 258 said that they liked sugar cereals. Three adults are selected at random without replacement. Find the probability that all three like sugar cereals. 2.58% 3.54% 3.56% 3.66%   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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In a sample of 80 adults, 28 said that they would buy a car from a friend

March 11, 2020 in /by

In a sample of 80 adults, 28 said that they would buy a car from a friend. Three adults are selected at random without replacement. Find the probability that none of the three would buy a car from a friend. 28.80% 26.90% 21.67% 34.30%   Looking for a Similar Assignment? Order now and Get 10% […]

 

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In asking all 349 second graders in a school district,

March 11, 2020 in /by

In asking all 349 second graders in a school district, it is found that on average, these second graders have 2.5 pets. Is this number a parameter or a statistic and why? Parameter as it represents the population Statistic as it represents the population Statistic as it represents the sample Parameter as it represents the […]

 

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