Probability that sample proportion is between a range

Assignment Help Basic Statistics
Reference no: EM13120032

In a local university,40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. What is the probability that the sample proportion (the proportion living in the dormitories) is between 0.30 and 0.50?

Reference no: EM13120032

Questions Cloud

Calculate the equilibrium concentrations of reactant : The equilibrium constant, Kc, for the following reaction is 1.29E-2 at 600 K: COCl2(g) CO(g) + Cl2(g)
Calculate the ph : In the titration of 68.0 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.49 M HCl, calculate the pH under the following conditions.
Sales in inventory for raw materials : Compute the (a) inventory turnover, defined as cost of goods sold divided by average inventory, and (b) days' sales in inventory, defined as 365 times ending inventory divided by cost of goods sold, for both its raw materials inventory and its fin..
Commutative and associative properties of multiplication : Use the commutative and associative properties of multiplication and exponential notation to rewrite the product.
Probability that sample proportion is between a range : A random sample of 80 students is selected for a particular study. What is the probability that the sample proportion (the proportion living in the dormitories) is between 0.30 and 0.50?
Properties of real numbers : Consider the following properties of real numbers: Commutative Property of Addition [6] Commutative Property of Multiplication
Calculate the concentrations of all species in na2so3 : Calculate the concentrations of all species in a 0.750 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
What is the initial cost of the silver mine : Smithson Mining operates a silver mine in Nevada. Acquisition, exploration, and development costs totaled $5.6 million. After the silver is extracted in approximately five years, Smithson is obligated to restore the land to its original condition,..
Math discussion questions : Your friend is taking an algebra class that began one week after ours. Explain to your friend how to graph linear inequalities with two variables. Include at least two examples.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Ideal data collection method

Is this an ideal data collection method? Can the results be considered reliable? Can the gathered data be representative of the population?

  Develop an estimated regression equation

Use regression analysis to develop an estimated regression equation that could be used to predict the value score given the price of the car.

  Problem related to random sample easy-fly airline

Easy-Fly Airline took a random sample of 25 flights to determine if the mean time it takes for luggage to reach the travelers departing from a flight is less than 15 minutes. The sample mean was found to be 13.8 minutes with a standard deviation o..

  Testing the significance of the regression model

The ANOVA summary table below is the result of a regression of sales on year of sales. Is the relationship statistically significant at .05? Comment.

  Lowest number of statistically significant

Discuss how scale impacts the interpretation of a graph and name the lowest number of a statistically significant sample size and state the statistically appropriate percentage total of displays

  Testing hypothesis of average price of gasoline

Test hypothesis that average price of gasoline in western states is higher than national average for Continental USA and the District of Columbia, i.e., higher than $3.74.

  Forecast using trend line-mad and mse

Use the sales data given below determine: a) The least square trend line.

  Level of confidence and sample size

When the level of confidence and sample size remain the same, a confidence interval for a population proportion π will be __________ when p(1-p) is larger than when p(1-p)   is smaller.

  Determine if there are patterns of either excellence or lack

These can have a large impact on tenure and promotion decisions at many institutions. One particular instructor had ratings in 3 courses in one semester as given by the table below for the statement "The instructor is an excellent teacher.

  Waiting time at a restaurant

Suppose the waiting time at a restaurant is normally distributed with a mean of 12 minutes and a standard deviation of 6 minutes.

  Critical and computed values for t test

Suppose that, for a t test, your computed value for t is +3.28. The critical value of t is +2.048. Explain what this means. Do you reject the null hypothesis or not?

  Determining events in distribution mutually exclusive

Are all the events in this distribution mutually exclusive? Describe in detail.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd