sample mean 45 sample standard deviation 5.3 sample size 50 and a got 43 marks out of 70 marks in his examination find z score for his marks
Q: 2. In the study described in the paper, "Exposure to Dlesel Exhaust Induces Changes in EEG in Human…
A: This routine calculates the sample size necessary to achieve a specified distance from the paired…
Q: eights of women aged 20 to 29 are approximately Normal with mean 64 inches and standard deviation…
A:
Q: Q5. Va) What is statistics? What is the role of statistics in studying electrical and electronic…
A:
Q: The amount of pollutants that are found in waterways near large cities is normally distributed with…
A: It is given that the mean and standard deviation are 8.7 ppm and 1.8 ppm, respectively. Here, the…
Q: the weight of male babies less than 2 months old in US is normally disrtibuted with mean 11.5 pounds…
A: We have given that, A random variable X i.e. the weight of male babies follows a normal distribution…
Q: According to a survey of 1,068 adult college students, the mean number of alcoholic beverages…
A: It is a test for single sample mean with unknown standard deviation.
Q: The first 2 drop-down options are claim or not claim, the 3rd is one-tailed or two-tailed test, the…
A: (a) State the hypotheses and identify the claim:Null Hypothesis (H0): The average farm size in…
Q: = calculated for both quantitativé Mean Variance Midrange
A: The mode is the value with the highest frequency, that is, the mode is the value in the data-set…
Q: A college entrance exam company determined that a score of 21 on the mathematics portion of the exam…
A: Here we need to find the p value.
Q: ● ● Find the mean and standard deviation of magnitude of the earthquakes in your sample Min = ● X =…
A: As per our guidelines, I can solve first unsolved question. Kindly post the remaining questions…
Q: What is the Margin of Error, E?
A: Since the sample size is small and population SD is unknown then we will use critical value based on…
Q: Conlan claims the true mean price for NY to London airfare on a reputed airline economy class is…
A: Given, Sample size = 25 Sample mean = 940 Sample standard deviation = 100 Since the population…
Q: Carect answers please fast
A: The objective of the question is to identify the most appropriate statistical test to use when…
Q: QUESTION 25 "Which of the following options is the correct Mean Squared Within treaments value for…
A: Given SS between=759.02 SS within=717.077
Q: 12,15,6,3,7,9,8,4,14,19,18,16,13,15,14,12,15,5 find sample standard deviation for given data
A:
Q: mean 66.790 medien 66.701 sample variance 5.94 sample standard deviation 2.44 (a)Using the ”Height…
A: Hello, thanks for posting your question here. To solve this problem, population standard deviation…
Q: b) Calculate the value of the test statistic. Round your answer to 4 decimal places. Submit part c)…
A: The standard error is calculated using the standard deviation and the sample size. The margin error…
Q: **Please show the input for excel** 1. A sample of 20 upright piano weights is taken as listed in…
A: Given data is appropriate for testing of hypothesis to test t-test for single mean. Because it is a…
Q: The mean number of English courses taken in a two-year time period by male and female college…
A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
Q: True or False? H0 for an ANOVA test often states that all the mean values from the different…
A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…
Q: 5 ppl sample Mean 22.2 A deviation 5.8 Confidence 90%
A: Given data, n=5 Mean x=22.2 sd s=5/8 Construct a 90% CI?
Q: A recent study focused on the amount of money single men and women save monthly. The information is…
A: Suppose μ1 and μ2 denote the population mean amount of money saved by women and men monthly,…
Q: higher
A: Given: Sample size, n = 54 Sample mean, sm=29 Standard deviation, s=7.8 Suppose, level of…
Q: A used car dealer says that the mean price of a three-year-old sports utility vehicle is $20,000.…
A: a) The claim is that the mean price of a three year old sports utility vehicle is not $20,000. The…
Q: What (negative) z-score has 47% of scores between it and the mean?
A: The negative z-score means the data value is below the mean or average value. The standard normal…
Q: Women arm span mean 65.6 std deviation 3.1 what % have arm span of 73
A: Mean, µ = 65.6 and the standard deviation, σ = 3.1.
Q: 1. Hypothesis: Reality TV watchers differ from the population in emotional intelligence (μ= 100, σ=…
A: mu = 100 xbar = 102.5 sigma = 15 n = 144
Q: Assume that Friday morning taxi-cab rides have times with a standard deviation of a = 9.9 minutes. A…
A: Claim: Friday afternoon times have greater variation than the Friday morning times.The null and…
Q: PROBLEN Find the range, MAD, Variance and Standard Deviation of the given data below EXERCISE 1 12,…
A: Solution: n= 31 observation The minimum observation inn the sample data is Minimum = 7 The…
Q: A sensor gives an alarm 0.5 times a minute. Find the mean waiting time until the next alarm Find…
A: (1) Obtain the mean waiting time until the next alarm. The mean waiting time until the next alarm…
Q: Using paired (dependent) observations is most advantageous for rejecting null hypotheses when the…
A: The correct option is The correlation between x and y scores is high
Q: What is the other term for the standard deviation of the sampling distribution of the sample means O…
A: We have given that the statement about to the standard deviation of sampling distribution of sample…
Q: Compute the value of the t-test statistic used in a two-sample test of significance for Ho: ₁ = ₂.…
A: Here two species of fruit fly are tested whether they have same average lifespan or not. Species C…
Q: A Gallup poll wants to determine the mean number of books Americans read each year. How many…
A:
Q: Compute the standard error for the sample mean from a SRS of 24 observations with sample standard…
A:
Q: How can I describe this set of data based on statistics?
A: Following observations can be made from the given data. Standard deviation has a lower value as…
Q: A clinical researcher performs a clinical trial on 12 patients to determine whether a drug treatment…
A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
Q: How does sample variance influence the estimated standard error and measures of effect size such as…
A: Standard error is always a multiple of sample variance where the multiple is a function of sample…
Q: Medical researchers con ability of patients suffering from claue A sample of 48 patients walked on a…
A: Given,
Q: According to a report done by S & J Power, the mean lifetime of the light bulbs it manufactures is…
A: From the provided information, Population standard deviation (σ) = 9 Sample mean (x̄) = 59 Sample…
Q: What is sample mean, sample median, sample mode, sample variance?
A: The question is about measures Given :
Q: Which is more affected by extreme observations, the mean or median? And how about the standard…
A: Solution: Here, it is to find that which is more affected by extreme observations.
Q: exam scores, the class mean, and the class standard deviation are given below. Where did you do…
A: The z-score is a score expressed in terms of hypothetical standard normal distribution with mean 0…
sample mean 45
sample standard deviation 5.3
and a got 43 marks out of 70 marks in his examination find z score for his marks
Step by step
Solved in 2 steps
- A homeless shelter program wants to know if receipt of job training program (yes, no) is related to program satisfaction (measured on a multi-item, Likert scale ). What type of statistical test should be used? Group of answer choices Independent t-test Dependent t-test ANOVA Correlation Analysis Chi SquareCan you please help me with this two questionsArvey is conducted to explore stados son eplume 10 panculs, this survey phones, their view the importance of daily posting on social media, and also whether or University of Arkanas students A sample of 150 Wilon College of Business students were s the The Summary Statistics Table for students Daily Phone Usage Time in minutent is shown an below. Daily Phone Usage Time (in minutes) Mean Standard Error Median Mode Standard Deviation Sample Variance Kartosis Skewness Range Minimum Maximum Sum Count 190 7.37 1474 O a normal distribution O a positively skewed distribution 7 7 8143.65 -1.05 1.35 300 0 300 26150 150 the type of cell phones, many ph of well phones is less According to the sample statistics, the shape of this sample distribution of "Daily Phone Usage Time for these 150 students is likely to be O a uniform distribution O a negatively skewed distribution
- A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief exective office (CEO) was at least 9 years. A survey of 98 companies reported in The Wall Street Journal found a sample mean tenure of 8.7 years for CEOS with a standard deviation of s = 4.7 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed. You want to formulate and test a hypothesis that can be used to challenge the validity of the claim made by the group, at a significance level of a hypotheses are: 0.001. Your H.:µ > 9 Ha:µ < 9 аents • Question 6 ons The U.S. Census Bureau reported that the mean area of U.S. homes built in 2012 was 2505 square feet. A simple random sample of 26 homes built in 2013 had a mean area of 2711 square feet with a standard deviation of 212 feet. Can you conclude that the mean area of homes built in 2013 is greater than the mean area of homes built in 2012? It has been confirmed that home sizes followa normal distribution. Use a 10% significance level. Round to the fourth Hn: Select an answerv Select an answerv Course ons HA: Select an answerv Select an answerv Test Statistic: P-value: Did something significant happen? Select an answer Select the Decision Rule: Select an answer There Select an answerv enough evidence to conclude Select an answer Question Help: O Message instructor Submit Question 用 hp Ce #3 9% & 3 4. 6. 7 8. W d. 0. O 2A %23 %24Find the mean, variance, and standard deviation with the given picture below.
- Traditional Students (G1) Online Students (G2) mean 2.97 2.95 standard deviation 0.34 0.35 sample size 33 22 significance level: 0.05 degree of freedom: 53 a) what is the t-statistic? Show calculations b) what is the p-value? Show calculationsHow do I find the p-value?1. Why do result of population mean and mean of sample means differ? 2. Why do results of population standard deviation and standard deviation of sample means differ?
- *please help me with this problem.I need to get it right to complete my homework.* In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before- after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.9 and a standard deviation of 19.8. Construct a 99% confidence interval estimate of the mean net change in LDL cholesterol after garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? What is the confidence interval estimate of the population mean muu? _mg/dL < muu< _mg/dLQuestion 6 95 U Vetalis The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell-shaped distribution. This distribution has a mean of 38 and a standard deviation of 10. Using the empirical rule, what is the approximate percentage of 1-mile long roadways with potholes numbering between 8 and 48? Do not enter the percent symbol. ans = Question Help: DPost to forumIt is the most widely used and most reliable average when the data contains no extreme values. Choose MEDIAN the so MODE MEAN DEVIATION VARIANCE RANGE STANDARD DEVIATION STATISTICS MEAN