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A number is written with a magic marker on each card of a deck of 52 cards. The number "1" is put on the first card, the number "2" on the second and so on. The cards are then shuffled and cut. What is the probability that the top 4 cards will be in ascending order? like the top card is 15 the second is 45, the third is 46, and the fourth is 50.
If the standard deviation of the population is 9 hours, determine whether there has been a significant increase in battery life expectancy.
The hypothesis test produces a z-score of z = 2.37. Assuming that the researcher is using a two-tailed test, what decision should be made?
hamilton county judges try thousands of cases per year. in an overwhelming majority of the cases disposed the verdict
Suppose that in fact 8% of the apples on the truck do not meet the desired standard. What's the probability that the shipment will be accepted anyway?
Develop a probability tree showing all marginal, conditional, and joint probabilities and what is the probability that a student selected at random failed the test?
the mean of iq is 100 and the standard deviation is 16. sarah is in the 92nd percentile. what is a possible iq score
4. Although most of us buy milk by the quart or half gallon, farmers measure daily production in pounds. Ayreshire cows average 47 pounds of milk a day with a standard deviation of 6 pounds. For Jersey cows, the mean daily production is 43 pounds wit..
Suppose you conduct survey asking people if they support something or if they like some product or if they watch some TV-show.
In case of fire, the probability that D1 operates correctly is 0.95 and the probabilty that D2 operates correctly is 0.92. Find the probability that the sprinkler system will come on.
A sample of 50 retirees is drawn at random from a normal population whose mean age and standard deviation are 75 and 6 years, respectively.
A customer wants delivery to be ensured between 10 am and 2 pm. Your truck leaves the factory at 4 am and time taken to reach the customer is normally distributed with an average of 8 hrs and a standard deviation of 1 hr.
Identify the null and alternative hypothesis, test statistics, p-value(or range of P-value), critical value(s), and state the final conclusion that address the original claim.
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