A manufacturer of sports equipment has developed a new synthetic fishing line that he claims has a mean breaking strength of greater than 8 kilograms with a standard deviation of 0.5 kilogram. Test the hypothesis that u > 8 kilograms if a random sample of 50 lines is tested and found o have a mean breaking strength of 7.8 kilograms. Use a 0.01 level of significance. Use 6 steps method.

Q: Missy took an SRS of 45 tires where the sample mean weight is 9.10kg and the sample standard…

A: Given that ; Sample size (n) = 45 μ = 9.0 kg X-  = 9.10 kg s = 0.25 kg By using one sample mean…

Q: advertises that one of its models of cars achieves 32 miles per gallon for highway driving.  A…

A: We have given that  Sample size n= 28 Sample mean = 30.76 Standard deviation = 2.32

Q: Find the value of the test statistic. Enter your answer to two decimal places.

A: It is given that Population mean, μ = 6.3 Sample mean, x̄ = 6.1 Sample standard deviation, s = 1.6…

Q: A sample of 81 Tillamook strawberries has am ean number of seed of 213, with a standard deviation of…

A: We have to complete hypothesis testing..

Q: The chamber of commerce of a Florida Gulf Coast community advertises that area residential property…

A: State the hypotheses.

Q: The mean height of 50 Male students who showed above-average participation in college athletics was…

A: Given: The sample size of first sample is n1=50. The mean of the first sample is x¯1=68.2. The…

Q: A computer manufacturer claimed that the mean weight of their laptops is 5.5 pounds. A sample of 125…

A: Given Information: Population mean (u) = 5.5 pounds Standard Deviation (s) = 1.1 pounds Sample mean…

Q: A sample of 81 account balances of a credit company showed an average balance of $1,200 with a…

A:

Q: (a) The director of an inner-city hospital believes that the mean cost per gunshot injury of…

A: We have to perform t test for testing the mean while we also have to create confidence interval for…

Q: A sample of 10 North Seattle College students produces an av- erage IQ of 95 with a sample standard…

A: The random variable is IQ. There are two types of college students which are North Seattle College…

Q: A factory manufacturing light emitting diode LED bulbs claims that their light bulbs last for 50,000…

A: A confidence interval is an inference method which gives the range of plausible values of the…

Q: A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that…

A:

Q: An automobile manufacturer advertises that one of its models of cars achieves 32 miles per gallon…

A: State the hypotheses.

Q: An engineer who is studying the tensile strength of a steel alloy intended for use in golf club…

A: The null hypothesis can be defined as the hypothesis of no difference or equality, while the…

Q: The average American consumes 98 liters of alcohol per year. Does the average college student…

A:

Q: tire company measures the tread on newly-produced tires and finds that they are normally distributed…

A:

Q: A student researcher found that 18 randomly selected rice farms had a mean harvest score of 86 and…

A: Given: A student researcher found that 18 randomly selected rice farms had a mean harvest score of…

Q: A random sample of 50 bags of white Cheddar popcorn weighed, on average, 5.35 ounces with a standard…

A:

Q: The local police department attempted to estimate the average vehicle speed along a strip of the…

A: Let X denote the average vehicle speed. Given, X~N36, 16 average speed of n = 4 cars is measured to…

Q: A textile mill company is investigating a new drapery yarn, which the company claims have a mean…

A:

Q: The manufacturer of the X-15 steel-belted redial truck tire claims that the mean mileage the tire…

A: Note: Hi there! Thank you for posting the question. As your question have posted multiple questions,…

Q: A restaurant claims the customers receive their food in less than 16 minutes. A random sample of 39…

A: From the given information, the restaurant claims the customers receive their food in less than 16…

Q: A survey conducted in Mega Manila with a sample of 350 gasoline stations found that the price…

A: According to the empirical rule [Also known as 68-95-99.7 rule]. Therefore, the probability that…

Q: Suppose that a manufacturer of laptop batteries claims that his product last more than 950 hours.…

A: Given data : sample size, n = 45 sample mean, x̄ = 925.0 sample standard…

Q: A sports science group claims that due to improved training methods, professional cyclists burn a…

A:

Q: the chamber of commerce of a florida gulf coast community advertises that area residential property…

A: The average weight has gone down. H0 : μ ≤125000. Alternative hypothesis: Ha :μ  >125,000 Since…

Q: A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that…

A:

Q: A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that…

A:

Q: A manufacturer of sports equipment has developed a new synthetic fighting line, which he claims has…

A: Given, A manufactueree of sports equipment has developed a new syhtetic fighting line, which he…

Q: From a research survey, it was found that a random sample of 18 elementary graduates of an exclusive…

A:

Q: Following maintenance and calibration, an extrusion machine produces aluminum tubing with a mean…

A: Note: As per the guidelines, solving first three subparts. Kindly repost the question and specify…

Q: A sample of 350 homes for sale in ABC City showed a mean asking price of $247,000, but the city…

A: Introduction: Denote μ as the true mean asking price of homes for sale in ABC City The claim by the…

Q: A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that…

A:

Q: A manufacturer of sports equipment has developed a new synthetic fishing line that claims to have a…

A: The value of test statistic is, Therefore, the value of test statistic is, z = -21.19

Q: A manufacturer of chocolate topping uses machines to dispense liquid ingredients into bottles that…

A: A hypothesis testing can be used to draw conclusions about the population parameters. When the…

Q: What can be concluded at the the αα = 0.10 level of significance?

A: Given that  The average American consumes 86 liters of alcohol per year Population mean (μ) = 86…

Q: A soft-drink vending machine is set to dispense 6.0 ounces per cup. If the machine is tested 36…

A: Given that, A soft-drink vending machine is set to dispense 6.0 ounces per cup. If the machine is…

Q: A random sample of 50 bags of blue corn tortilla chips had a mean weight of 9.06 ounces, with a…

A: Computing the values of the test statistics:It is assumed that variances are equal. The formula for…

Q: A fast-food franchiser is considering building a restaurant at a certain location. According to a…

A: Denote μ as the population mean number of pedestrians passing the location per hour.   It is needed…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A:

Q: A sample of 150 homes for sale in ABC City showed a mean asking price of $233,000, but the city…

A: Given, Sample size = 150 Sample mean = 233000 Population standard deviation = 11000   Under the…

Q: A study was conducted to determine if a certain treatment has any effect on the amount of metal…

A: Given, n1=100          n2=200x1=12.2         x2=9.1σ1=1.1          σ2=0.9α=0.02Zα2=Z0.022=2.33

Q: The manufacturer of the X-15 steel-belted redial truck tire claims that the mean mileage the tire…

A: Hi! Thank you for the question As per the honour code, We’ll answer the first question since the…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: From the provided information, Mean (µ) = 63 Standard deviation (σ) = 8 Using empirical rule,…

Q: A sample of 30 sales records from a convenience store has mean of R142. It is known that the…

A: Given : Mean = x = 142 Standard deviation = σ = 34 Sample mean = n = 30

Q: Following maintenance and calibration, an extrusion machine produces aluminum tubing with a mean…

A:

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A:

Q: A quality-assurance inspector periodically examines the output of a machine to determine whether it…

A: n = 35 xbar = 2.025 u = 2 s = 0.07

Q: A rental agent claims that the mean monthly rent, µ, for apartments on the east side of town is less…

A: