A random sample of 10 observations of a normally distributed random variable X gave the following summarised

Question:

A random sample of 10 observations of a normally distributed random variable X gave the following summarised data, where x̅ denotes the sample mean.

Test. at the 10% significance level, whether the population mean of X is less than 7.5.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Cambridge International AS & A Level Further Mathematics Coursebook

ISBN: 9781108403375

1st Edition

Authors: Lee Mckelvey, Martin Crozier

See More Books

Question Posted: Sep 27, 2021 01:20 AM

See More Questions

A random sample of 10 observations from population A has a sample mean of 152.30 and a sample standard deviation of 1.83. A random sample of 8 observations from population B has a sample standard...
A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s2 = 19.5. Determine the 98% confidence interval for 2.
A random sample of 10 stock market mutual funds was taken. Suppose that rates of returns on the population of all stock market mutual funds follow a normal distribution. a. The probability is 0.10...
An important U.S. government organization charged with setting human resource management guidelines is O the EEOC (Equal Employment Opportunity Commission). the OSHA (Occupational Safety and Health...
A $15 000, 2.5% bond is purchased six years and six months before maturity to yield 3% semi-annually. If the bond interest is payable semi-annually, what is the purchase price of the bond?
Match Point Inc. manufactures a high-end model tennis racket. The company's forecasted income statement for the year, before any special orders, is as follows: Fixed costs included in the forecasted...
In 2005, Sheila Newman decided to invest a large amount of her savings. Having little knowledge of investments, she researched companies online and decided to buy an annuity from National Western...
Golf Glider makes gasoline-powered golf carts. The selling price is $5,000 each, and costs are asfollows: Golf Gliders income is taxed at a 40 percent rate. a. How many golf carts must Golf Glider...
QUESTION 3 (20 MKS) a) Obtain the time-independent Schrodinger Wave equation from the time dependent equation. [10 mks] b) Solve the time-independent Schrodinger equation given that,(x) = Aekx [10...
Geraldine Shawhan is president of Shawhan File Works, a firm that manufactures two types of metal file cabinets. The demand for her two-drawer model is up to 600 cabinets per week; demand for a...
State the null and alternative hypotheses for the following tests. a. The population mean differs from 41. b. The population mean is greater than 7.3. c. The population mean has decreased from 54.2....
For the following confidence intervals, find the value that must be used from the t-distribution. a. 90% confidence interval, n x , = 8, n y = 6 b. 95% confidence interval, n x , = 14, n y = 9 c. 99%...
Divide into two groups, and prepare arguments for and against the following behavior: Your Company is managing to maintain a good profit margin on the computer parts you manufacture in a very tough...
EE printing is in the evaluation process for the acquisition of a new computer system. The total depreciable base (cost plus installation) is $160,000. The new equipment will increase Earnings before...
4 - Indicate whether the following are subject to Employment Insurance premiums by indicating 'yes' or ' no ' in the appropriate box. a ) retiring allowance b ) supplement for any part of an...
How do social institutions function as complex systems of rules, norms, and practices that organize and regulate social behavior, and how do they shape individual identities, relationships, and...
Sasha transfers furniture and fixtures having a $45,000 basis and a $105,000 FMV and $30,000 in cash to Mary's Bar and Grill in exchange for 100 shares of stock. The fixed assets originally cost...
ZAMANI has just bought a new HONDA ACCORD that costs RM 89,000. She took a 9-year loan from ABC Bank that requires her to pay 10% of the cost, as down payment. Determine amount of ZAMANIs annual...
Kieran measures the magnetic field of an electron beam. The beam strength is such that 1.40 1011 electrons pass a point every 1.30 s. What magnetic field strength does Kieran measure at a distance...
A new car sold for $31,000. If the vehicle loses 15% of its value each year, how much will it be worth after 10 years?
Draw the major product expected from each of the following reactions: (a) (b) ? Lindlar's catalyst Pt -? Ni,B -? Ni
Draw the major product expected when each of the following alkynes is treated with sodium in liquid ammonia: (a) (b) (c) (d)
Identify the reagents you would use to achieve each of the following transformations: (a) (b)
I need to find out how to calculate the 3-year % rate of return. The information I have is a $10,000 investment and a 12-month yield percentage (1.138 for AB company, 1.894 for AIG company, 0.679 for...
Anna has an investment that will bring her $100 with a 30% probability and $40 with a 70% probability. Anna's Utility function is U = Y (1/2) . Where Y= income. Anna is considering selling this...
on January 1, 2000, the price of koka kola was $10. on jan and, 2020, the shares were worth $100. the stock Paid no dividends during the period. what is the annual geometric return.

A random sample of 10 observations of a normally distributed random variable X gave the following summarised

Question:

Ex= 70.4, E (x - x = 8.48

Step by Step Answer:

To test whether the population mean of X is less than 75 we can use a onetailed ttest with a signifi...View the full answer

Cambridge International AS & A Level Further Mathematics Coursebook

Students also viewed these Sciences questions