User Account

All Pages

Estimate the true average time to within given minute

Assignment Help Basic Statistics
Reference no: EM13143964

A large supermarket chain would like to estimate the amount of time people spend looking at a particular type of in store display. From similar studies they believe the standard deviation of the time would be around 6.2 minutes. If they would like to estimate the true average time to within 1.9 minute (with 95% confidence) what sample size should they use? (remember to round to the next largest integer.)

Reference no: EM13143964

Questions Cloud

Define assess the feasibility of the reaction : Assess the feasibility of the reaction: N2H4 (g) + 2OF2 (g) ® N2F4 (g) + 2H2O (g) by determining each of the following quantities of this reaction at 25 oC.
Explain what is meant by subjective probability : Explain what is meant by subjective probability. Research the Internet, and provide a business-related example in which subjective probability assessment would likely be used (be sure to cite your sources).
Trial balance and journalize the adjusting entry : If Allowance for Doubtful Accounts has a credit balance of $2,201 in the trial balance, journalize the adjusting entry at December 31, assuming bad debts are expected to be (1) 1% of net sales, and (2) 12% of accounts receivable.
What is the chemical formula and name of this acid : A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
Estimate the true average time to within given minute : If they would like to estimate the true average time to within 1.9 minute (with 95% confidence) what sample size should they use? (remember to round to the next largest integer.)
What is the molarity of the base : When titrating 0.15 M HCl with a calcium hydroxide solution of unknown concentration, 35 mL of acid are required to neutralize 25 mL of the base.
Present value of minimum lease payments : Explain why the value of the leased asset and the accompanying lease obligation are not reported on the balance sheet initially at $80,000.00
Problem related to after-tax income : Ivan Company has a goal of earning $75,000 after-tax income. Ivan would need to pay $20,000 of income taxes at the target level of income. The contribution margin ratio is 39%. What amount of dollar sales must be achieved to reach the goal if fixe..
Explain most important alkaloid derived from cinchona bark : Quinine (C20H24N2O2) is the most important alkaloid derived from cinchona bark. It is used as an antimalarial drug.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Linear regression model

A faculty group wants to determine whether job rating (x) is a useful linear predictor of raise (y). Consequently, the group considered the linear regression model:

  Compute the probability values using discrete distribution

What is the probability that a respondent said neither the Big Ten nor the Pac-10 would have a team in the Rose Bowl?

  Conducting one-sample t-test

Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from "The Collection from the Best of Classical Music."

  Confidence interval standard deviation of birth weights

What is the 95% confidence interval for the standard deviation of birth weights at County General Hospital, if the standard deviation of the last 25 babies born there was 1.1 pounds.

  Select the right sample size for a simple random sample

A random variable has a standard deviation of 16, and an unknown mean. Find the lowest size of a simple random sample so that the sample mean estimates the population mean with a standard error no larger than 0.25.

  Create frequency table and histogram shape of distribution

Following are speeds of 40 cars clocked by radar on a particular road in a 35-mph zone on a particular afternoon; Make (a) a frequency table, (b) a histogram, and (c) a frequency polygon. Then describe the general shape of the distribution.

  Determining assignment of probabilities to six faces of die

If die is loaded so that 6 comes up with probability 0.2 and probabilities of 2,3,4, and 5 faces are not affected, determine the assignment of probabilities to the six faces?

  Arrangement and group statistics

For the grand opening, an arena has selected 5 finalists, each of whom will win a season ticket located in one of 5 sections: The upper balcony, lower balcony, main floor, courtside, or a luxury box.

  Interpreting confidence interval for the p-value

Interpreting confidence interval for the P-value. Give an appropriated response. A weight loss center provided a loss for 72% of its participants.

  Probability of sample mean of weights of catfish

The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with a mean of 3.2 pounds and a standard deviaition of 0.8 pound.

  Find expected value-variance of number of altered accounts

What is the probability that at least one of the alternations is discovered? Find the expected value and variance of the number of altered accounts discovered during the audit.

  Point estimation of the mean price of all homes

A sample of 120 homes sold recently in a big city gave the mean price of homes equal to $270,000 and the standard deviation equal to $70,000. (a) What is the point estimate of the mean price of all homes in the big city?

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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