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Statistics and Probability Answers

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A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and test 19 ​tablets, then accept the whole batch if there is only one or none that​ doesn't meet the required specifications. If a particular shipment of thousands of aspirin tablets actually has a 4​% rate of​ defects, what is the probability that this whole shipment will be​ accepted?
According to a certain​ country's department of​ education, 39.2​% of​ 3-year-olds are enrolled in day care. What is the probability that a randomly selected​ 3-year-old is enrolled in day​ care?
click the box corresponding to the GIA category. you can not see that the blue rectangle has been removed. notice that the frequency and relative values for the full data set have not changed;
Does second-hand smoke increase the risk of a low weight birth? A baby is “low birth weight” if it weighs less than 5.5 pounds at birth. According to the National Center of Health Statistics, about 7.8% of all babies born in the U.S. are categorized as low birth weight.
According to the empirical rule, if the data form a "bell-shaped" normal distribution, approximately _______ percent of the observations will be contained within -1 and +1 standard deviation around the arithmetic mean.
Q.4.A firm buys 3 shipments of parts each month .The purchasing agent selects at random from among four in state suppliers .What is the probability that the orders are placed with
a. in-state suppliers only.
b. out of state suppliers only.
c. at least in state suppliers only.
Q.5.Give explanations of the following terms:
a. Conditional probability.
b. Joint probability distribution.
c. Probability distribution.
d. Expected value of the random variable.
e.Combination and permutation.
The human resource department at a certain company wants to conduct a survey regarding worker benefits. The department has an alphabetical list of all
5859 employees at the company and wants to conduct a systematic sample of size
50.
​(a) What is k​?
In preparing a report on the​ economy, we need to estimate the percentage of businesses that plan to hire additional employees in the next 60 days.
In a distribution exactly 7% of the items are under 35 and 89% are under 63. What is the mean and sd of the distribution ?
Draw the cumulative frequency polygon and then use your graph to determine the median.
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