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Seed compnay has a test plot in which it is testing the germination of a hybird seed. They plant 50 rows of 40 seeds per row. After a two-week period, the researchers count how many seed per row have sprouted. They noted that least number of seeds to germinate was33 and some rows had all 40 germinates. The germination data is given below. The random variable x represents the number of seed in a row that germinates and P(x) represents the probability of selecting a row with that number of seeds germinating. Determine the standard deviation of the number of seeds per row that germinated.
x: 33 34 34 36 37 38 39 40P(x):0.02 0.06 0.10 0.20 0.24 0.26 0.10 0.02
Develop a scatter diagram for the data and write a brief summary.
Use a scatter plot to determine the relationship between the x values and the y values.
The heights, in feet, of the five tallest buildings in four large cities are compared. What is the critical value if the level of significance is 0.10?
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Compute the standard error of the proportion.
Consider the situation where you have three game chips, each labeled with one of the numbers 5,6,& 7 in a hat:
The U.S. Congress enacted legislation in 2005 authorizing Block Grants to cities as part of an Anti-Crime initiative. The grant monies are to be used to hire additional police officers for conducting beat patrols in high crime areas.
How large a sample should she take to estimate the percentage with a margin of error of no more than 4%, with 90% confidence?
A hypothesis will test that two population means are equal. A sample of 10 with a standard deviation of 3 is selected from the first population and a sample of 15 with a standard deviation of 8 from the second population.
If the company loses contract A, the probability winning contract B decrease to .2. Find the probability of the following events. Winning both contracts
A psychologist studied self-esteem scores and found the data set to be normally distributed with a mean of 50 and a standard deviation of 6. A raw score of 47 is associated with what percentile?
A corporation owns a factory that produces sulfuric acid. Because of changing conditions, the plant's output is quite variable. The company's president has observed that the output is normally distributed with a mean of 8,200 pieces per hour.
Bbut only 1 percent of those closed will have something stolen. If a garage is robbed, what is the probability the doors were left open?
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