Confidence interval for the mean of the population

Reference no: EM13104460

You measure the weights of 24 male runners. You do not actually choose an SRS, but you are willing to assume that these runners are a random sample from the population of male runners in your town or city. Here are their weights in kilograms:

67.8 61.9 63.0 53.1 62.3 59.7 55.4 58.9
60.9 69.2 63.7 68.3 64.7 65.6 56.0 57.8
66.0 62.9 53.6 65.0 55.8 60.4 69.3 61.7

a) Suppose that the standard deviation of the population is known to be sigma = 4.5 kg. What is sx, the standard error of x?

b) Give a 95% confidence interval for the mean of the population from which the sample is drawn.

c) Are you quite sure that the average weight of the population of runners is less than 65 kg?

Reference no: EM13104460

Questions Cloud

Randomly selected day from the distribution : Find the probability that exactly six tickets are written on a randomly selected day from this distribution.

How many seconds will he win or lose by : Having taken a nap under a tree only 20 m from the finish line, Rabbit wakes up to find Turtle 19.5 m beyond him, grinding along at 1/4 m/s. If the bewildered hare can accelerate at 8 m/s2 up to his top speed of 17 m/s (38 mi/h) and sustain that s..

Confidence intervals of population mean : According to a report produced by the New South Wales Ministry of Health, 46% of hospitalisations occur in people aged sixty years and over (60+).

Confidence interval construction : June Walker is the Director of the Annual Fund for Marine Life University. She asks her analyst to study the giving patterns of the alumni of the School of Marine Sciences.

Confidence interval for the mean of the population : Give a 95% confidence interval for the mean of the population from which the sample is drawn.

How much time passes before the ice starts to melt : An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute .

Create state diagram to identify one form of comment : Create the state diagram to identify one form of the comments of Cbased programming languages, those that begin with /* and end with */.

Describe the steps to assemble project team : Describe the steps you would take to assemble a project team. ow do you define risk management and project risk? What is the relationship between risk and opportunity?

Determine the maximum amount of ice : The power required by an ice maker is 225 W and is the rate at which it does work. The ice maker operates like a refrigerator or an air conditioner and has a coefficient of performance of 3.60.

User Account

All Pages