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A farmer believes that using organic fertilizer on his plants will yield greater income.hus average income from the past was php 200 000.00 per year
A.state the null and the alternative hypothesis in symbol.
B.state wether the test is directional or non directional
If a freshman is selected at random to become student assistant, what is the probability of selecting a student with an IQ between 9o and 120?
It is claimed that the mean annual salary of call center customer service representatives
is P188,584.00. A researcher randomly selected 50 call center customer service representatives. He computed the mean of their annual salaries and obtained a mean of P188,600.00.
If a random sample of size 81 is drawn from this
population, what is the probability that the mean
of this sample is larger than 53.5 inches?
The mean weight of Grade 11 Section Star is 51 kg. and the standard deviation is 3.12 kg. Assuming the weight are normally distributed, what percent of weight greater than 57 kg.?
Student scores on a test that measures self-image are approximately normally distributed. This test is
administered to 20 science students and the mean and standard deviation of their test scores are 88
and 24, respectively.
a) Find a 98 % confidence interval of the true mean.
b) What can we assert with 98% confidence about the possible size of our error if we estimate the
mean score to be 88?
Find the percentile rank of the 18 using the following data: 15, 13, 6, 5, 12, 22, 50, 18
The amount of lemonade in a 2 litre bottle is normally distributed with a mean of 2.1 liters and a standard deviation of 0.07 liters.The portion of bottles that actually contain more than 2 liters is ?
Random samples with size 5 are drawn from the population containing the values 26, 32, 41, 50, 58, and 63. Determine the standard error of the sample means.
Random samples with size 5 are drawn from the population containing the values 26, 32, 41, 50, 58, and 63. Find the mean of the mean of the sample means.
#339914 on Dec 2023