5. Cross stitch is a needlecraft that merges sewing and embroidery using x-shaped stitches to form a pattern. According to a crafter at Malaysia artexhibition, a large (2 x 2 meters) cross stitch typically takes at least 31 monthsto stitch. The average amount of time spent by a group of 16 cross stitchcrafters to complete one was 25 months, with a standard deviation of 7.2months.a) Examine the crafter's claim by using a 2.5% significance level. Assume thatthe time taken to finish a cross stitch is normally distributed for all cross stitchcrafters. [CO3, C4]b) Describe the Type I error in part a). Present the probability of creating thiserror. [CO2, A3 & A2]c) Discuss your decision of part (a) if the probability of creating a Type I erroris 0.001. [CO3, C2]

It is given that the average amount of time spent by a group of 16 cross stitch crafters to complete…

Answered: Cross stitch is a needlecraft that…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Similar questions

The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one school year. The speed limit on that part of Reynolds Rd is 20 mph. The mean of the speed readings was 24.19 mph, with a standard deviation of 3.56 mph.
According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches. If Zsike is 67 inches tall, what is her z-score?
A second species of extra-terrestrial has a mean height of 71cm and a standard deviation of 5.3cm. An astro biologist discovers that 30% of the extra-terrestrials bump their heads when they enter their spacecraft. What is the height of the door to the space craft?
Please see attached.
A man works for a travel agency whose employees had an avergae income of Php32,000 with a standard deviation of Php4,000. How much did a man earn if his z-score is 0.90?
The weight of a baby African elephant is normally distributed with a mean of 234 pounds and a standard deviation of 34 pounds. Use the applet we used in class and make sure to include a screenshot here: https://homepage.divms.uiowa.edu/~mbognar/applets/normal.html a. Find the maximum weight of the baby elephant that is in the lower 10% of the distribution. Round to the nearest whole number. b. Find the weight of the baby elephants if the probability between the two weights represents the middle 50% of the distribution. Round to the nearest whole number.
A luxury furniture manufacture will make custom furniture for their customers. Pricing is based on the number of hours of skilled labor it takes to make a piece. The time it takes to make a custom couch is normally distributed with an average of 280 hours and a standard deviation of 40 hours. What percent of custom couches take 255 hours or less to make? How long would it take to build a couch that is in the 95th percentile?
Jomt density furctión x and y is The ef the rardom vorcables of Caz ty), o s4cec Ke f (a,y) %3D else where find the constant Value (ii ) tind the manginal density for x and y (i) trid the conditional probabi lity demity density function guen y (iv ) frid the condi tional probability density funetcon of y guien Com qute PCyz 2)
The A.C Nielsen company reports that about 85.5% of U.S households have a color T.V. Find the mean and standard deviation of the number of households in a sample of six that have a color T.V Complete solution please
The US mean height for adult men is = 68.5 inches, with a standard deviation of = 3 inches. The mean height for adult women is = 62.7 inches, with a standard deviation of = 2.7 inches. Who is taller relative to their gender, a man 75 inches tall, or a woman 68 inches tall?
The University of Georgia has several football players participating in the NFL draft this season. A few former coaches are helping the players prepare for the NFL tryout by tracking their practice performance. One coach calculates the athlete's speed in feet per second each round and then finds the mean and standard deviation for all rounds. Since the workout tested at the NFL tryout is the 40 yard dash, the coach decides to convert these speeds to yards per second instead of feet per second, where 1 yard is equal to 3 feet. Which of the following best describes what would happen to the summary statistics for the athletes? (A) The mean would increase, but the standard deviation would remain the same. (B) Both the mean and standard deviation would remain the same. (C) Both the mean and standard deviation would decrease. (D) The mean would decrease, but the standard deviation would remain the same. (E) The mean would decrease, but the standard deviation would increase.

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