The treasurer of certain university claims that the mean monthly salary of their college professor is Php21,750 with the standard deviation of Php6,000. A researcher takes a random sample of 75 professors were found to have a monthly salary of Php19,375. Do the college professor have lower salaries than the rest. Test the claim at α = .05 level of significance. REQUIREMENTS: Write the research hypothesis Write your final conclusions

Q: A ski gondola carries to the top of a mountain. Assume that the weights of skiers are normally…

A:

Q: The amount of coffee dispensed by a vending machine is assumed to be normally distributed. A vendor…

A: Here's mean is 5.8 and standard deviation is 0.8. Sample number is 36 and population mean is 6. We…

Q: the General Social Survey asked a sample of  1313  people how much time they spent watching TV…

A: The objective of this question is to determine whether the data provides sufficient evidence to…

Q: support the scientist’s estimate

A: A scientist estimates that the mean nitrogen dioxide level in Westman is greater than 28 parts per…

Q: A student at a four-year college claims that mean enrollment at four-year colleges is higher than at…

A: From the given data ,5466  ,  = 50688191  ,  477735      ,   35Significance level , 0.10

Q: An insurance company wants to know if the average speed at which men drive cars is greater than that…

A:

Q: The average height of students at UT from an SRS of 11 students gave a standard deviation of 3.0…

A: Givensample size(n)=11standard deviation(s)=3.0confidence level=95%

Q: A student at a four-year college claims that mean enrollment at four-year colleges is higher than at…

A: The following information has been provided: n1=35          n2=35x¯1=5466      x¯2=5068s1=8191…

Q: In a survey sample of 1000 respondents, the mean annual salary is $32,245, with a standard deviation…

A: Solution: Given information: n= 1000 Sample size  x= $32245  Sample mean  s=$4021.54  Sample…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 97.3 and a standard…

A: Given data Mean μ= 97.3 Standard deviation ? = 22.8 First quartile is given by Probability = 0.25

Q: štatištičiáns he mean entry-level salaries approximately the same. A recruiting office randomly…

A: Since, you have posted a question with multiple sub-parts, we will solve the first three complete…

Q: The mean length of one-year-old spotted flounder, in millimeters, is 127 with standard deviation of…

A:

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

A: X follows a Normal distribution with mean = 1497 and S.D = 293 Then z=(x-mean)/SD = (x-1497)/293…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Givenaverage length of trout caught in Pyramid Lake is μ = 20 inches.Sample size = 37sample mean =…

Q: and II error (in words). Analyze the scenario and formulate situations where type I and type II…

A: Given: Sample size = 100 Sample standard deviation = 6 Sample mean = 160 Hypothesized mean = 158.2

Q: The average score on an test of sustained attention is 30 with a standard deviation of 5. A…

A:

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Determine the level of significance.   Significance level:    In order to decide how small the…

Q: A recent study showed that the average number of sticks of gum a person chews in a week is 16. The…

A: From the provided information, Sample size (n) = 31 Sample mean (x̄) = 14 Population standard…

Q: Arsenic occurs naturally in some ground water and can be toxic. A mean arsenic level of μ=9 parts…

A: Given that α=0.005. Hence, the level of significance is 0.005.   The appropriate Null and…

Q: In a survey, 17 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: A professor at a local university noted that the exam grades of her students were normally…

A: The mean is 73 and the standard deviation is 11.

Q: It takes an average of 9.9 minutes for blood to begin clotting after an injury. An EMT wants to see…

A: The level of significance is 0.01.

Q: For a random sample of 90 overweight men, the mean number of pounds that they were overweight was…

A:

Q: A researcher measured the walking speed of travelers in the crazy town municipal airport and banana…

A: The null and alternative hypothesis is,

Q: Naini, Cobourne, McDonald and Donaldson (2008) reported that a specific ratio of height to face…

A: According to the provided data, it is reported that a specific ratio of height to face length of 1…

Q: The carapace length of an adult is normally distributed with a mean of 17.55 mm and a standard…

A:

Q: A pediatrician obtains the heights of her 200 three-year-old female patients. The heights are…

A: The given mean is 37.8 and the standard deviation is 3.14.

Q: An insurance company wants to know if the average speed at which men drive cars is greater than that…

A:

Q: The time needed for college students to complete a certain maze follows a normal distribution with a…

A: t-test: If the given sample size is less than or equal to 30 and sample standard deviation is given.…

Q: In 2002, the mean age of an inmate on death-row was 40.7 years, according to data from the US…

A:

Q: A sample of 77 subjects went on a low-carbohydrate diet for six months. At the end of that time, the…

A: Given that  Sample size n1=77 , n2=79 Sample means x1=4.7 , x2=2.6 s1=7.16 , s2=5.9

Q: Does the data provide sufficient evidence to indicate a difference in the home sales prices between…

A:

Q: A manufacturer of bolts has a​ quality-control policy that requires it to destroy any bolts that are…

A: Given :Population mean length (  ) = 10 cm.Population standard deviation of length (  ) = 0.05 cm.

Q: The weight of potato chips in a large-size bag is stated to be 24 ounces. The amount that the…

A:

Q: The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one…

A: In this intriguing analysis centered around traffic speeds near Johnson City High School, the…

Q: A man works for a travel agency whose employees had an avergae income of Php32,000 with a standard…

A:

Q: he cheetah is the fastest land mammal and Is highly specialized to run down prey. The cheetah often…

A: Given data, μ=59.53σ=4.19