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1. Find the 99th percintile of the normal curve.
2. Find the upper 5% of the normal curve.
3.Find the 92nd percintile rank of the normal curve.
Find the probabilities using the normal distribution
1. P (0 <z <1.96)
2. P (z> -1.43)
3. P (1.12 <z <1.43)
4. P (-1.23 <z <0)
n=5,u overline x =183. sigma overline x =4.5
Consider all samples of size 2 from the population 2,5,6,9,11 and 13. Compute the mean, the variance of the sampling distribution of the sample mean
A teacher wants to know if listening to KPop music
affects the performance of his students in mathematics. A
class of 30 students were selected in the experiment. The
mean score was 81 and the standard deviation is 5. A
previous study revealed that u = 80 and the standard
deviation is 8. State the null and alternative hypothesis in
words and symbols
A ramdom sample of 18 bottles of 500-ml C-Softdrink had a mean content of 480 ml with a standard deviation of 4 ml, while sample of 14 bottles of 500-ml P-Softdrink had a mean content of 490 ml with standard deviation of 5 ml. Using 0.01 level of significance, can you say that C-Softdrink has lesser mean content than P-Softdrink
You are given a population of 3 elements,which are 3,4,5. Suppose all possible samples of size 2 are drawn from the population with replacement, compute for the following
a survey company, sws, claims that a majority of gen z voters prefer leni robredo as the next president over that of its main competitor, bongbong marcos. to test this claim 500 randomly selected people were surveyed. among them, 270 leni, 211 bbm, and 1919 could not make up their minds. determine whether there is sufficient evidence, at the 5% level of significance, to support the sws survey claim against the default that the population is evenly split in its preference. Show your calculations.
At a recent chess tournament, all 15 of the participants had to fill out a form that gave their names, address and age. The ages of the participants were recorded as follows: 36, 48, 54, 92, 57, 63, 66, 76, 66, 80, 82, 65, 39, 77, and 45. Use the data to construct a frequency table and histogram with 3 classes.
Classes | Class Boundaries | Frequency | Midpoint | Cumulative Frequency
For the set of data below, determine the 5 number summaries. Construct the resulting box and whisker plot. (20 pts)
5, 3, 8, 6, 1, -10, 3, 9, 7, 4, x, (x is your last digit of your CUNYFirst ID number) my ID is 5
