6 - It is desired to compare the yields of two different types of wheat seeds. It was observed that an average of 525 kg of product per hectare and an average of 450 kg of product per hectare was obtained in 200 randomly selected fields, where X' type seeds were sown, and an average of 525 kg of product per hectare in 100 randomly selected fields. Since the error of the difference between the means is 13.93, indicate the confidence limits of the difference between the yields of both wheat seeds with 99% probability.

Q: A sample of size 50 is selected from a population having a standard deviation equal to 4. Find the…

A: given data  σ = 495% ci for μ.E = ?

Q: 6. A civil engineer is analyzing the compressive strength of concrete. Compressive strength is…

A:

Q: 11.-12. aints] Gnu, a snowboarding company, is testing to see if their two most popular snowboards…

A: The observed softness scale of the snowboard are as follows:Broad 1Broad 297141215128713878In this…

Q: A company has a maximum population variance allowed of 0.04 for its bottle filing machines. A sample…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: 2) The yield of chitin powder (mg) from fish scales is being studied and it known to have a normal…

A:

Q: machine filling 18-gram containers of a hair dye is set so that the average fill is 18.2 grams with…

A:

Q: A laboratory's measurement process for chloride concentrations was assessed by randomly inserting 15…

A: The test hypotheses are: Null hypothesis: H0: μ = 10 mg/l. Alternative hypothesis: H1: μ ≠ 10 mg/l.…

Q: Compute a 95% confidence interval estimate for the mean strength of stainIess-steeI wires made by…

A: Given (for the new process):

Q: Many college graduates who are employed full-time have longer than 40-hour work weeks. Suppose that…

A:

Q: Two new drugs are being compared for effectiveness in lowering total cholesterol levels. On the…

A: We have given that  On the sample of 15 subjects, drug A is found to lower total cholesterol by an…

Q: Many college graduates who are employed full-time have longer than 40- hour work weeks. Suppose that…

A: Given : Margin of error = 1.2 standard deviation = 6.1

Q: 4.2)Suppose there 2000 living organisms in a small pond. The point estimate of the population in the…

A:

Q: A transect is an archaeological study area that is 1/5 mile wide and 1 mile long. A site in a…

A: From the provided information, Sample size (n) = 23 Sample variance (s2) = 53.3 Population variance…

Q: A sample of size 50 is selected from a population having a standard deviation equal to 4. Find the…

A: given data  population standard deviation(σ) = 490% ci for μ.margin of error(E) = ?

Q: It is desirable to compare the yields of two different types of wheat seeds. It was observed that an…

A: 95% CI for difference of mean yield for two types of wheat seeds is (49.44, 100.56). Answer is (a).

Q: 1. The burning rate of solid propellant used to power aircrew escape systems is normally distributed…

A:

Q: Assume that you have a sample of n1=9​, with the sample mean Xbar1=43​, and a sample standard…

A: Givenn1=9x1=43s1=7n2=14x2=31s2=8confidence level = 99%

Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: The standard error used in calculating a 95% confidence interval for the difference in the average…

A:

Q: Many college graduates who are employed full-time have longer than 40-hour work weeks. Suppose that…

A: The confidence level is 0.95, the population standard deviation is 6.00 and the margin of error E is…

Q: Two groups were tested in a pH rain experiment. Group A has 25 samples with mean of 4 and standard…

A: Given: n1=25x¯1=4s1=0.5n2=25x¯1=5s1=0.8

Q: In Izmir Univesity of Economics in 2018, from a random sample of 6 students in an introductory…

A: Step-by-step procedure to obtain the 95% confidence interval for the difference between the…

Q: ne yields oduct per hectare and an average of 500 kg of product per hectare was obtained in 100…

A: Given:x bar1=575x bar2=500SE=13.04 We know that the critical value for z at 90% confidence level is…

Q: A random sample of n measurements was selected from a population with standard deviation o = 10.9…

A:

Q: Two suppliers manufacture a plastic gear used in a laser printer. The impact strength of these gears…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: The diameter of steel rods manufactured on two different extrusion machines is being investigated.…

A: a)Suppose are the true population means of diameter of rods produced from machine 1 and 2,…

Q: Compute the value r^2(percentage of variance accounted for)these data.

A: It is given that the data for Well-lit room and Dimly-lit room. Let the random variable x is…

Q: A common characterization of obese individuals is that their body mass index is at least 30…

A: From given data we have : n=266+158+121=545 Number of individuals in the sample with BMI 30 or more…

Q: Give the margin of error for the 90% confidence interval for µd = µ1 – H2

A: The differences are 4, 6, 2. The mean is, d¯=∑dn=4+6+23=123=4 The standard deviation is,…

Q: A random sample of 12 pea tins from a canning factory's production is selected on a given day, and…

A: Given that We have to find a.. For the sample, the weight's mean and standard deviation are,…

Q: Lower limit: Upper limit:

A: Given:  Level of significance = 0.01 Populations are normally distributed with equal variances.…

Q: Three different methods for assembling a product were proposed by an industrial engineer. To…

A:

Q: Your boss wants you to sample a small number of parts from a large order to be able to guarantee 0…

A: Your boss wants you to sample a small number of parts from a large order to be able to guarantee 0…

Q: Which interpretation is correct? O u1 is substantially greater than µ2, therefore the average…

A: A confidence interval estimate is an interval estimate that includes the unknown population…

Q: - It is desired to compare the yields of two different types of wheat seeds. It was observed that an…

A: Given Data: x1=525 x2=450 SE=13.93

Q: A quick but imprecise method of estimating the concentration of a polluting chemical in a vat has…

A: There is always some contention about the value of a parameter or the relationship between…

Q: The university data center has two main computers. The center wants to examine whether computer 1 is…

A:

Q: In a production process of metal sticks, the length of these metal sticks is distributed normal with…

A: Given: σ=1.8e=0.50 From the Standard Normal Table, the value of z* for 99% level is 2.576. The…

Q: are and an average of 500 kg of product per hectare was obtained in 100 randomly selected fields,…

A: Given:x bar1=575x bar2=500SE=13.04 We know that the critical value for z at 95% confidence level is…

Q: A manufacturer of office machines is considering the production of a new word processor. The…

A: Use paired t - test distribution, if you have paired measures on the same subject. In our case, we…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.