Determining the confidence interval for the time

Assignment Help Mathematics
Reference no: EM131046814

A random sample of 42 salespersons were asked how long on average they were able to talk to a potential customer. Their answers revealed a mean of 8.100000000 with a variance of 6 minutes. Construct a 95% confidence interval for the time it takes a salesperson to talk to a potential customer.

Reference no: EM131046814

Questions Cloud

Richard owns several retail stores : Richard owns several retail stores. The employees are insured for employee theft under a commercial crime coverage form (loss-sustained form) with an insurance limit of $10,000.
Voice of a similar sounding female : From past experience, it is known that 90% of one-year-old children can distinguish their mother's voice from the voice of a similar sounding female. A random sample of 20 one-year-old children are given this voice recognition test. Calculate the ..
Kathy owns a large retail electrical store : Kathy owns a large retail electrical store that sells light fixtures, lamps, and electrical equipment. The firm is not insured for employee theft. A risk management consultant recommended adding an ISO commercial crime coverage form to the firm's ..
Question regarding the number of women selected : Two people are selected at random from 6 men and 9 women. The random variable is the number of women selected. Give all possible values of the random variable.
Determining the confidence interval for the time : Their answers revealed a mean of 8.100000000 with a variance of 6 minutes. Construct a 95% confidence interval for the time it takes a salesperson to talk to a potential customer.
Confidence interval for the true time : A random sample of 76 people revealed it took an average (mean) of 60 minutes with a standard deviation of 8 minutes for a person to complete a loan application at the bank. Construct a 90% confidence interval for the true time it takes any person..
Appropriate null and alternative hypotheses : A mail-order catalog claims that customers will receive their product within 3 days of ordering. A competitor believes this is an underestimate. State the appropriate null and alternative hypotheses to be tested by the competitor.
High temperature for the month of august in philadelphia : A meteorologist claims that the average high temperature for the month of August in Philadelphia, PA. is 83 degrees Fahrenheit. If the residents of Philadelphia do not believe this to be true, what hypotheses should they test?
Determine the velocity as propagation of plane wave : Determine the location where the sub is to be attached (distance from the load) length of the stub needed to match the load - determine the velocity as propagation of plane wave in this material

Reviews

Write a Review

Mathematics Questions & Answers

  Calculating mortgages

When calculating mortgages, where r=rate, t=time p=payment what does M equal?

  The sales revenues for different companies in given

are the advertising dollars spent by a company related to total sales revenue? the following data represent the

  Difference between time period and production lines

How can you or your department decide whether or not the observed differences over time are important?

  Discrete mathematics

1) a) How many 16 bit strings of 0's and 1's contain exactly 7 1's? b) How many 16 bit strings of 0's and 1's contain at least one 1?

  Compute the bias of the random variable

For each of the eight DES S-boxes, compute the bias of the random variable X2 ⊕ Y1 ⊕ Y2 ⊕ Y3 ⊕ Y4. (Note that the DES S-boxes map 6-bit input to 4-bit output and are therefore not invertible. But this should not concern you here.)

  What is the probability that card is an even-numbered card

one card is selected at random from a standard deck of 52 playing cards, what is the probability that the card is an even-numbered card.

  What is the rate of change of temperature

What is the temperature at the point (1,2) and if we move from the point (1,2) in direction parallel to the positive y axis what is the rate of change of temperature?

  How long does it take the boat to reach the buoy

A speedboat moving at 40.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.00 m/s2 by reducing the throttle.

  How much energy is needed to increase the temperature

how much energy is needed to increase the temperature of 755 g of iron from 283 k to 403 k.

  Slope of tangent to curve

Determine the slope of the tangent to each of the following curves:

  Explain a financial analyst and you have a client

A financial analyst and you have a client that wants to retire in 30 years with $1 Million. Your bank's interest rate is 6.7%. Design a financial plan for them. How much would be their initial deposit? Would you use simple or compound interest..

  What is an f-ratio

1. Jackson, even-numbered Chapter Exercises, pp. 308-310. 2. What is an F-ratio? Define all the technical terms in your answer. 3. What is error variance and how is it calculated?

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