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Question 1: In 1965, a newspaper carried a story about a high school student who reported getting 9207 heads and 8743 tails in 17,950 coin tosses. Is this a significant discrepancy from the null hypothesis H0= 1/2.
Question 2: Jack Youden, a statistician at the National Bureau of Standards, contacted the student and asked him exactly how he performed the experiment. To save time the student tossed groups of five coins at a time, and a younger brother recorded the results, shown in the following table:
Number of Heads
Frequency
0
100
1
524
2
1080
3
1126
4
655
5
105
Are the data consistent at the 1% significance level with the hypothesis that all the coins are fair (p = 1/2)?
Using part(a), explain to investor differences between distribution of performance figures for the 2 kinds of stock funds.
A researcher measures a response variable Y and explanatory variable X on each of several objects. A scatterplot of the measurements is as follows.
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When using past data, I have found that the proportion of items rejected by quality control personnel is about 3%. We normally make 5000 items per day. For a p chart, what are the upper and lower control limits?
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
The 50 members of the placebo group had blood pressure lowered by an average of 15 points with standard deviation 8 points. To analyze this information we will use a, When testing whether or not the increases in spending are different, the test is ..
In what height interval must the company expect to determine middle 70% of kindergarteners?
X is a continuous random variable uniformly distributed on [20, 45] that is, the end points c = 20 and d = 45.
For a sample with standard deviation of 10, a score of X = 44 corresponds to z-score of 0.50. Based on this info, determine the sample mean?
What is the probability that they all hit the target?
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