Question

In: Statistics and Probability

The following data is a sample of weights taken from the population of Edinburg: 124 147...

The following data is a sample of weights taken from the population of Edinburg:

124 147 210 347 124 321 321 321

310 124 145 145 145 124 178 234

a) Find the sample mean

b) Find the sample standard deviation

c) Find the range

Solutions

Expert Solution

a) Mean

b)

124
147
210
347
124
321
321
321
310
124
145
145
145
124
178
234

Standard deviation

c) Range = Maximum - Minimum =


Related Solutions

The following data is for a simple random sample taken from a normal population: 2.41 2.45...
The following data is for a simple random sample taken from a normal population: 2.41 2.45 2.21 2.32 2.25 2.38 (a) Find a 95% prediction interval. (b) Find a tolerance interval that contains 90% of the data with 95% confidence
The following data is for a simple random sample taken from a normal population: 2.41 2.45...
The following data is for a simple random sample taken from a normal population: 2.41 2.45 2.21 2.32 2.25 2.38 (a) Find a 95% prediction interval. (b) Find a tolerance interval that contains 90% of the data with 95% confidence
A sample of 18 observations taken from a normally distributed population produced the following data: 28.5...
A sample of 18 observations taken from a normally distributed population produced the following data: 28.5 27.5 25.3 25.3 31.3 23.3 26.2 24.5 28.3 37.4 23.9 28.8 27.5 25.5 27.1 25.5 22.7 22.7 Round your answers to three decimal places. a. What is the point estimate of μ? x¯=   b. Make a 90% confidence interval for μ. c. What is the margin of error of estimate for μ in part b? E=
The following sample of weights was taken from 8 cookies off the assembly line. Construct the...
The following sample of weights was taken from 8 cookies off the assembly line. Construct the 95% confidence interval for the population standard deviation for all cookies that come off the assembly line. Round your answers to two decimal places. 7.4,6.6,6.6,6.6,6.9,7.5,6.8,7.6
The following sample of weights was taken from 8 muffins off the assembly line. Construct the...
The following sample of weights was taken from 8 muffins off the assembly line. Construct the 90% confidence interval for the population variance for all muffins that come off the assembly line. Round your answers to two decimal places. 18.0,17.9,18.3,17.6,18.5,18.2,18.0,18.6 Lower endpoint and upper endpoint?
The following sample of weights was taken from 9 cans of soda off the assembly line....
The following sample of weights was taken from 9 cans of soda off the assembly line. Construct the 80% confidence interval for the population standard deviation for all cans of soda that come off the assembly line. Round your answers to two decimal places. 14.5,14.7,14.3,14.3,14.6,15.1,15.3,15.1,14.4
Suppose that a simple random sample of size ?=325 selected from a population has ?=147. Calculate...
Suppose that a simple random sample of size ?=325 selected from a population has ?=147. Calculate the margin of error for a 95% confidence interval for the proportion of successes for the population, ?p. Compute the sample proportion, ?̂ ,, standard error estimate, SE, critical value, ?, and the margin of error, ?.. Use a ?-distribution table to determine the critical value. Give all of your answers to three decimal places except give the critical value, ?, to two decimal...
A random sample of size n = 225 is taken from a population with a population...
A random sample of size n = 225 is taken from a population with a population proportion P = 0.55. [You may find it useful to reference the z table.] a. Calculate the expected value and the standard error for the sampling distribution of the sample proportion. (Round "expected value" to 2 decimal places and "standard error" to 4 decimal places.) b. What is the probability that the sample proportion is between 0.50 and 0.60? (Round “z” value to 2...
A random sample of size n = 130 is taken from a population with a population...
A random sample of size n = 130 is taken from a population with a population proportion p = 0.58. (You may find it useful to reference the z table.) a. Calculate the expected value and the standard error for the sampling distribution of the sample proportion. (Round "expected value" to 2 decimal places and "standard error" to 4 decimal places.) b. What is the probability that the sample proportion is between 0.50 and 0.70? (Round “z” value to 2...
A random sample of size n is taken from a normally distributed population with a population...
A random sample of size n is taken from a normally distributed population with a population standard deviation (σ ) of 11.6. The sample mean (x) is 44.6. Construct a 99% confidence interval about µ with a sample size of 26.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT