Heights​ (cm) and weights​ (kg) are measured for 100 randomly selected adult​ males, and range from heights of 133 to 188 cm and weights of 40 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x=167.80 ​cm, y=81.36 ​kg, r=0.286​, ​P-value=0.004​, and y=−108+1.19x. Find the best predicted value of y ​(weight) given an adult male who is 138 cm tall. Use a 0.10 significance level.

Q: The desired percentage of SiO2 in a certain type of aluminous cement is 5.5. To test whether the…

A: Solution : Given that,          x =5.25σ =0.3μ=5.5n=16 (a) Test the Hypothesis :    H0 : μ=5.5…

Q: There are 5000 observations in a data set. 10% of the data are “1”s, while the rest are “0”s. If we…

A: The data set consist of 5000 observations. The observations are 0's and 1's. An amount of data…

Q: A random sample of 30 alloy of TIN and LEAD contains, on average, 100 grams of LEAD with a standard…

A: From the provided information, it is given that: x¯ (sample average)=100n (sample size)=30s (sample…

Q: The marginal proportions for the independent variable are .40 and .60 and those for the dependent…

A: Calculation of Maximum value of phi

Q: 2 of 3: Find the first quartile.

A: From the provided stem and leaf plot is n=26 Q1=(n+14)th observation=(26+14)th observation=6.75th…

Q: The Us food and Drug administration has a limit for mercury content in fish of 1.0ppm (parts per…

A:

Q: The variables X and Y with zero means and standard deviations of and O₂ are normally correlated with…

A:

Q: A Gaussian random variable with variance 10 and mean 5 is transformed to Y=e. Find the pdf of Y.

A: Solution-: Given: μ=5,σ2=10 Let, Y=eX Find pdf of Y?

Q: In a study of tooth paste, 40 children used paste without fluoride resulting in a mean of 5.65…

A: n1 = 40n2 = 40 x1 =5.65x2 = 4.75 s1 = 1.3s2 = 1.1

Q: Assuming alpha level is held constant, if someone does a one-tailed test the critical value will…

A: Here, we use  the concept of hypothesis testing....  When alpha is constant.       (Given)

Q: Suppose X has a lognormal distribution with parameters (u, alpha) , where u is unknown and…

A: Given that X has lognormal distribution with parameters mu  and sigma = 0.5 The 33rd percentile is…

Q: A student makes ten measurements of the density of a gas (g/L) at a reduced pressure of 10.00 kPa…

A: Mean is the average of the sum of all the values in the given data divided by the total number of…

Q: Sony would like to test the hypothesis that the average age of a PlayStation user (mu 1) is greater…

A: Given

Q: To determine the gas constant RR, two students AA and BB perform an experiment based on the ideal…

A: Generally SSE is denoted as error with sum of squares and similarly SST is denoted as squares of…

Q: If I am conducting a one-tailed z test and my risk is 1% what should my critical value be?

A: From the provided information, The level of significance (α) = 1% that is 0.01 The test is one…

Q: What is the difference between the critical value of z and the observed value of z?

A: Given that  The difference between the critical value of z and the observed value of z is described…

Q: A spectrometer was used to measure the light absorbed by three standard solutions containing…

A: First determine the value of absorbance using the given equation. Now use the formula of standard…

Q: A hospital reported that the nomal death rate for patients with etensive burns (more than 40% of…

A:

Q: The sample mean and standard deviation from a random sample of 30 observations from a normal…

A: Computing the test statistic for hypothesis test: The test statistic for t test is given by:

Q: For 50 randomly selected speed dates, attractiveness ratings by males of their female date partners…

A:

Q: A manufacturer of automobile products has developed a new wax and is interested in comparing the new…

A: It is tested whether the new wax will protect the car for longer period of time than the standard…

Q: To deal with the phenomenon of alpha inflation when doing multiple t-tests, what post-hoc tests such…

A: In Bonferroni Correction , first divide the desired alpha level by the number of comparisons.

Q: A distribution with a mean of 76 and a standard deviation of 12 is transformed into a standardized…

A: The following information is provided in the question μOld=76 σOld=12μNew=95σNew=7 Now, a. First…

Q: A researcher is testing the effect of marijuana use on reaction time. A sample of n = 9 students is…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The desired percentage of SiO, in a certain type of aluminous cement is 5.5. To test whether the…

A: Given that x bar=5.23

Q: The test statistic of z=−1.69 is obtained when testing the claim that p=1/2. a. Using a significance…

A: Solution: a. State the hypotheses. Null hypothesis: H0: p=1/2 Alternative hypothesis: H1: p≠1/2

Q: To test the claim that the resistance of electric wire can be reduced by more than 0.050 ohm by…

A: We want to test the hypothesis

Q: A statistician claims that the standard deviation of the weights of firemen is more than 25 pounds.…

A: Solution: State the hypotheses. Null hypothesis: That is, the standard deviation of the weights of…

Q: A random sample of CO2 levels in a school has a sample mean of x¯=598.4 ppm and sample standard…

A: Given ,       mean =598.4      standard deviation=86.7by using emprical rules i.e 1) The empirical…

Q: A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may have…

A:

Q: If the alleles A and B of the cystic fibrosis gene occur in a population with frequencies p and 1 -…

A:

Q: of detergent collected, the average viscosity of the sample was 812 centistokes and the standard…

A: We have given that,  Hypothesized mean = 800 , Sample mean 812 , Sample standard deviation SD = 25 ,…

Q: A random sample of 100 students at a high school was asked whether they would ask their father or…

A: Claim : There is no difference in the proportions.   Hypothesis : H0 : p1 = p2 H1 : p1 ≠ p2 It is…

Q: Need help, please.

A:

Q: If you have a sample size of 50 and you are comparing 3 groups at the .05 level- what is the…

A: We are provided with the following information, Sample size = 50 Number of groups to compare = 3…

Q: 4).  A random sample of 13 size AA batteries for toys yield a mean of 2.9 hours with standard…

A:

Q: Suppose that each of 937 smokers received a nicotine patch, which delivers nicotine to the…

A: Note: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: A series of tests of fire prevention sprinkler systems that use a foaming agent to quell the fire…

A: Computation of test statistic value: Sample size is smaller than 30 and the population standard…

Q: The sulfate ion concentration in natural water can be determined by measuring the turbidity that…

A: Given : The sulfate ion concentration in natural water can be determined by measuring the turbidity…

Q: A researcher wants to prove that a brand X size AAA battery can last Y. Two normally distributed…

A: For 'X' batteries : sample size (n1) = 10 sample mean (x̄) = 463 sample standard deviation (Sx) =…

Q: Heights​ (cm) and weights​ (kg) are measured for 100 randomly selected adult​ males, and range from…

A: Here in this question, it is given that P-value = 0.009 Level of Significance = α = 0.10 Since…

Q: Draw th Chi Square Curve and put in the critical value (p = 0.05) Is the null hypothesis accepted…

A: Given table is:

Q: Stock Y has a beta of 1.2 and an expected return of 11.4%. Stock Z has a beta of 0.80 and an…

A: Hsv

Q: An article compared the dielectric constants between two types of asphalt, HL3 and HL8, commonly…

A: From the given information, An article compared the dielectric constants between two types of…

Q: A new starch polymer foam with high shock absorbent properties is expected to perform better than…

A: Hello! As you have posted 2 different questions, we are answering the first question (4-2). In case…

Q: using the z table (table e), find the critical value (or values) for each. a. alpha=0.10, two tailed…

A: a)It is given that level of significance is 0.10 and the test is two tailed.Here,

Q: A group of researchers have developed a device which can automatically monitor bo perature and can…

A: The t test for two independent samples is the appropriate test for the given data. It determines…

Q: Let x, x, distribution with parameter 0. Find sufficient estimator for 'O’. ... x be a random sample…

A: