Heating systems based on natural gas and cogeneration are on offer for use in greenhouse. A sample of 16 greenhouses  using natural gases produces an average monthly cost of Rs. 35,000/- with a standard deviation of Rs. 800/-. Another  sample of 14 greenhouses with cogeneration facility produces an average monthly cost of Rs. 32,800/- with a standard  deviation of Rs. 1,000/-. At α = 0.05, determine if the average cost of the two systems are significantly different

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A:

Q: Have American males (AMs) gotten heavier over the last 20 years? A random sample 77 AMs in 2019 had…

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Q: A random sample of 41 adult coyotes in a region of northern Minnesota showed the average age to be x…

A: The summary of statistics is, x¯=2.09,s=0.88,n=41,μ=1.75 (a) The level of significance is, α=0.01

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A:

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Q: A random sample of 46 adult coyotes in a region of northern Minnesota showed the average age to be x…

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Q: A marine biologist claims that the mean length of mature female pink seaperch is different in fall…

A: we have given that  n1=12, xbar1=106 ,s1=15 and n10,xbar2=102 ,s2=11 alpha =0.01 Note : according to…

Q: 1. In the past, a chemical company produced 880 pounds of a certain type of plastic per day. Now,…

A: Given that  Sample size n =50 Population mean μ =880 Sample mean =871 Standard deviation =21

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Q: marine biologist claims that the mean length of mature female pink seaperch is different in fall and…

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Q: 1. In the past, a chemical company produced 880 pounds of a certain type of plastic per day. Now,…

A:

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A: Given: The Given Mean Value is 251.8 and standard deviation 62.1 To Find the Approximate Percentage…

Q: In the past, a chemical company produced 880 pounds of a certain type of plastic per day.  Now,…

A: State the hypotheses.

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Q: Suppose the distribution of maximum monthly January temperatures in Canberra is normal with mean, μ…

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Q: A random sample of 41 adult coyotes in a region of northern Minnesota showed the average age to be x…

A: Givensample size(n)=41Mean(x)=2.07standard deviation(s)=0.82

Q: A random sample of 46 adult coyotes in a region of northern Minnesota showed the average age to be…

A: Given n=46, xbar=2.05, s=0.82, mean=1.75

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Q: millimeters. A sample of 11 mature female pink seaperch collected in winter has a mean length of 108…

A: Solution: Given information: n1= 13 Sample size of falln2= 11 Sample size of winter x1= 112  Sample…

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A: Empirical rules:1) P(μ-σ<X<μ+σ)=68%2) P(μ-2σ<X<μ+2σ)=95%3) P(μ-3σ<X<μ+3σ)=99.7%

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Q: Hens usually begin laying eggs when they are about 6 months old. Young hens tend to lay smaller​…

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Q: Have American males (AMs) gotten heavier over the last 20 years? A random sample 77 AMs in 2019 had…

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A: For a negatively skewed distribution Mean, Median, Mode is the most probable order for three…

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A: From the provided information, Sample size (n) = 18 Sample mean (x̄) = 2.6 Standard deviation (s) =…

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A:

Q: 1. In the past, a chemical company produced 880 pounds of a certain type of plastic per day. Now,…

A: Given that  Sample size n =50 Sample mean =871 Standard deviation =21 Population mean μ =880

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A: Given data n1=55       n2=55x¯1=32       x¯2=28σ1=2        σ2=4

Q: Have American males (AMs) gotten heavier over the last 20 years? A random sample 77 AMs in 2019 had…

A: i) Null hypothesis: H0: μx –μy=0 Alternative hypothesis: Ha: μx –μy>0 The test statistic is as…

Q: A recent study found that pregnancy length for single-baby child births is approximately normally…

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Q: Suppose that in a random selection of 100 colored candies, 24% of them are blue. The candy company…

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Q: n a manufacturing industry, the amounts which go into raw materials (Scraps) are supposed to be…

A: Denote the scarp that is declared out of control by a random variable X. Given that the scraps that…