A pharmaceutical company claims that the employees' salary average = 1047 dollars. We want to test that the mean is lower than the company's claim. We are using a sample of 49 with an average salary of 1320 dollars. Then the test statistics %3D is? The standard deviation is found to be 8.3 dollars.

A pharmaceutical company claims that the employees' salary average = 1047 dollars. We want to test that the mean is lower than the company's claim. We are using a sample of 49 with an average salary of 1320 dollars. Then the test statistics %3D is? The standard deviation is found to be 8.3 dollars.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

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

A: Given: This lake is famous for cutthroat trout. A friend tells you that the average length of trout…

Q: of the cholesterol levels are assumed to be abnormally high, what would be the lowest cholesterol…

Q: n the state of Ohio, data has shown that 9% of adults are illiterate (lack basic reading and writing…

A: Solution: Given information: n1=300 Sample size of adults from Alabama n2=250 Sample size of adults…

Q: Farm Sizes. The average farm size in the United States is 444 acres. A random sample of 40 farms in…

A: From the provided information, Sample size (n) = 40 Sample mean (x̄) = 430 Population standard…

Q: Dr. Samwell Tarly wants to estimate the number of books checked out of the library in the past year.…

A: It is given that the mean is 10,000 and the standard deviation is 10.

Q: Management at a video game store wants to gain a better understanding of their customers. In order…

Q: The height of trees in a nursery is normally distributed with a mean of 56.4 inches and a standard…

A: The height of trees in a nursery is normally distributed with a mean of 56.4 inches and a standard…

Q: A successful basketball player has a height of 6 feet 8 inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: An article in a local town newspaper discusses the results of state test scores in their town. The…

A: Answer:-

Q: An article in a local town newspaper discusses the results of state test scores in their town. The…

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

Q: You have a dataset with a mean of 50 and a standard deviation of 5. What is the coefficient of…

A: From the provided information, Mean (x̄) = 50 Standard deviation (s) = 5

Q: A flu test shows that about 31% of 90 patients visited hospital in the first week of January had…

A: Given that n = 90 , p = 31% = 0.31 , q = 1 - p = 1 - 0.31 = 0.69 X ~ Binomial (n = 90 , p = 0.31) X…

Q: The mean rate for cable t.v.from a sample of 80 households was $29 per month with a standard…

Q: Social scientists have designed a “happiness survey” that attempts to measures how happy people feel…

A: As per guidelines we will solve first question only, please repost other questions for more answers.…

Q: 11. MENSA, the high IQ society, only accepts membership into their organization if an applicant's IQ…

A: Given Data Population Mean,μ = 100.0 Population Standard Deviation,σ = 15.0

Q: b. The test statistic 0° c. The p-value = d. The p-value is ≤ ✓ O α (please show your answer to 3…

A: The given information is:Sample 1:The sample size is The sample mean is The sample standard…

Q: In a standardized exam the mean score is 400 with a standard deviation of 50. Assume the scores…

A: Solution

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

Q: ketch a bell curve for the ACT composite data with markings on the horizontal axis for ±1 standard…

A: here given , For the ACT, the mean composite score was 21.0 with a standard deviation of 5.2.

Q: A commonly used standardized test in psychology research is designed so that the mean score of all…

A: From the provided information, Mean (µ) = 140 Standard deviation (σ) = 20 X~N (140, 20) Here X be a…

Q: The mean height of males 20 years old or older is 69.1 inches with a standard deviation of 2.8…

A: given data x = height of 20 years old or older μ = 69.1 inchesσ = 2.8 incheskevin's height,x = 83…

Q: Do shoppers at the mall spend more money on average the day after Thanksgiving compared to the day…

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

Q: computer company daims that the employees' salary average = 5774 dollars. The standard deviation is…

A: Given data,μ=5774σ=722n=36x=5171test statistic (z)=?

Q: you created a survey that measue Depression In you want to test people. the Claim that the mean.…

A: Solution-: Given: x¯=6.7,μ0=6.5,n=145,s=1.5 We test the claim that the mean measurement of…

Q: In a study of 400 people, the mean age is 50 years and the standard deviation of age is 10 years.…

Q: The population average for SAT scores is known to be 500 with a standard deviation of 100. This…

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

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

Q: You randomly select 14 student cars and find they have a mean age of 7.3 years and a standard…

A: Let n1, n2 be the sample size Sample mean of first and second are respectively x̄1 amd x̄2 s1…

Q: Most medical schools require applicants for admission to take the Medical College Admissions Test…

A: It is given that mean and standard deviation are 500 and 10.6, respectively.

Q: After calculating the mean and standard deviation, how do we interpret the result, and when a…

A: The mean is a measure of central tendency and the standard deviation is a measure of dispersion in…

Concept explainers

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.

Question

A pharmaceutical company claims that the employees' salary average = 1047
dollars. We want to test that the mean is lower than the company's claim. We are
using a sample of 49 with an average salary of 1320 dollars. Then the test statistics
is? The standard deviation is found to be 8.3 dollars.
O a. 1611.6867
O b. 32.8916
O c. 230.2410
O d. -230.2410
Activate Windows

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Basics of Inferential Statistics$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.

Similar questions

The distribution of the amount of money spent by first-time gamblers at a major casino in Las Vegas is approximately normal in shape with a mean of $600 and a standard deviation of $120. According to the standard deviation rule, almost 84% of gamblers spent more than what amount of money at this casino?
A sample of 281 Al products sold at The Yes Buy located at Finch and Keele has a mean of $74.83 and a median of $68.88. Later, it was discovered that an observation which was recorded incorrectly as "$90.25" but the actual value should be "$95.75". If we make this correction to the data, then what is the sample mean, median, mode and standard deviation?
I only need B and C
Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?
A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
The mean number of hours students studied each day was 4 with a standard deviation of 1.5 hours. The distribution was normal. What proportion of students studied 6 hours or more per day? What proportion of students studied 2 hours or more per day? How many hours would an individual at the 60th percentile rank study?
An article in a local town newspaper discusses the results of state test scores in their town. The reporter headlines, "The students in this town don't have the necessary skills. The overall student population is less than what is reported at the state level" The state test says that a score of 261 or higher on its test reflects the student has the skills needed to graduate. A local town newspaper conducted a random sample of 200 students and found the mean to be 257 and a standard deviation of 41 points. a. State the null (H0) and alternative (Ha) hypotheses. b. Give the standard score for the data. c. Find the P-value for this significance test. e. Sketch your results on the standard Normal distribution f. Summarize the conclusion in the context of this problem.
There is a new medication for diabetes, fifteen participants take the medication for fifteen days. The average blood glucose before taking the medication was 155 (population mean). The average blood glucose after taking the medication is 110. The standard deviation for the average glucose after taking the medication is 4.6. You want to evaluate if there is statistical evidence that there is a reduction in the mean glucose after taking the medication for 15 days. You must conduct a t-test. What is the t-statistic?
The mean score for first exam in your first organic chemistry class (section A) was 60, with a standard deviation of 5. Your score on the exam was 70. A. How many standard deviations above the mean is your score?
The Alpha company takes a survey of the age for all employees. The average age is 35 with a standard deviation of 3.2 years. The results for a normal distribution curve. If the company has 985 workers, how many are over 44 years old?
Please only answer questions C and D
If you feel the answer is none of the choices given. Just write it out. Please write in print or text. I can’t understand cruive