11.500 Samples are processed by frequency analysis (DFT), how many frequencies are expected
Q: The length of fish were measured at 3 different lakes. Is there evidence to suggest that the…
A: Hypotheses: H0: μ1=μ2=μ3H1: At least one μ is different
Q: The length of pregnancies from conception to natural birth among a certain female population is…
A: Given data,μ=270σ=9P(X<285)=?
Q: Weather in the tropics has a mean of 98.2o and a standard deviation of 0.62o. Find each z-score and…
A: Given that μ=98.2 and σ=0.62 a) z-score: z=score-μσ =100-98.20.62 =2.9032 Condition for Unusual:…
Q: Determine the sample size required to estimate the mean score on a standardized test within 44…
A:
Q: The number of traffic accidents per week in a small city has a Poisson distribution with mean equal…
A:
Q: help with expected frequencies please!!
A: Obtain the expected frequencies for each cell. The expected frequencies for each cell are obtained…
Q: A mechanical device has a wear out time distributed normally with a mean of 1100 hours and a…
A:
Q: The mean height of Male College Students in a large City is 68 Inches Cand the Standard clevation IS…
A:
Q: The finishing time for cyclists in a race have an unknown distribution with mean 138 and standard…
A: According to the central limit theorem, The distribution of the sample mean is approximatively…
Q: random sample of size 64 is drawn from a population with mean 80 and standard deviation 20. Describe…
A: Given: Population mean μ=80 Population standard deviation σ=20 Sample size (n) = 64
Q: age normally distributed
A: Solution
Q: recorded their survival time (in days) after they were injected with an infections bacteria. The…
A: It is given that the data set 43, 79, 82, 91, 102, 114, 137, 184, 511
Q: Suppose the data represent the inches of rainfall in April for a certain city over the course of 20…
A: From the provided information,n = 20
Q: How long of wingspan does the shortest 15% of butterflies have and you know that their wingspans are…
A: Solution: Let X be the wingspan. From the given information, X follows normal distribution with mean…
Q: hich bell curve would have a wider width? A bell curve with a standard deviation of 20 or a bell…
A: Given:First curve- SD=20Second curve- SD=1 Curve with wider width=?
Q: In a mango farm of 500 trees, the mean harvest is 96.5 kg of mango fruits per tree with a standard…
A: In a mango farm of 500 trees, the mean harvest is 96.5 kg of mango fruits per tree with a standard…
Q: population has a mean=77 and a standard deviation =27 find the mean and standard deviation of a…
A: given data, μ=77σ=27n=81mean and standard deviation for the sampling distribution of sample means…
Q: The population distribution of the useful lifetime of a cutting blade of a concrete saw has mean 50…
A: From the provided information, Population mean (µ) = 50 hours Standard deviation (σ) = 9 hours Let X…
Q: A random sample of n1 = 300 voters registered in the state of California showed that 143 voted in…
A: Given: Sample sizes: Number of voters in California n1=300 Number of voters in Colorado n2=216…
Q: Assume that weights of adult females are normally distributed with a mean of 80 kg and a standard…
A: Let X denotes the weights of adult females. Given that X~N(μ=80,σ2=(22)2). Let Z=X-8022, then…
Q: The number of small air bubbles per 3 feet by 3 feet plastic sheet has a Poisson distribution with a…
A:
Q: If the masses of 250 students are normally distributed with mean 69 kg and standard deviation 3 kg.…
A: Answer: From the given data, Let X: mass of students Mean (μ) = 69 kg Standard deviation (σ) = 3 kg…
Q: On a first exam a particular class produces a mean exam score of 79 with a standard deviation of 3.…
A: Given,mean(μ)=79standard deviation (σ)=3and exam score (X)=79
Q: researcher asks six (6) families how many times they ordered delivery from Amazon in the last six…
A: The given values are 6, 9, 2, 12, 6, and 5. It will consider as a population. The population size is…
Q: The ages of professors in 6 schools are: 50, 39, 40, 65, 60, 45. Compute the Standard Deviation
A:
Q: There is one male baby seal for every nine female baby seals. What is the average number of male…
A: p=P(male baby seal ) = 1/9 n=5
Q: The amount of time, in minutes, that a person must wait for a bus is uniformly distributed between…
A:
Q: If SS Total = 8.8 and SS Between = 4.2, what is SS Error?
A: Answer: From the given data, SS Total = 8.8 SS Between = 4.2
Q: runner ran a time for the 100 meter sprint of 15.0 seconds at a school where the mean time for the…
A:
Q: Can you show me a step explanation on how to find the standard deviation for a sample proportion…
A: As per central limit theorem the formula for standard deviation for a sample proportion is,
Q: The weights (in pounds) of 19 preschool children are 21, 30, 27, 20, 36, 42, 33, 50, 49, 37, 44, 28,…
A:
Q: Find the population standard deviation of these numbers: 22, 19, 25, 16, 20 (round to two decimal…
A: Given numbers(x); x x2 22 484 19 361 25 625 16 256 20 400 ∑x=102 ∑x2=2126
Q: The average height of 20 students in a class is 160 cm with a standard deviation of 10 cm. If a new…
A: Answer: To find the new average height, we first calculate the sum of heights of the existing…
Q: The noise reduction processor of an HDTV receiver computes an average frame over every 25 frames…
A: Solution: Let X be the noise in the original images that reach the receiver. From the given…
Q: The mean length of six-year-old rainbow trout in the Arolik River in Alaska is 481 millimeters with…
A: Given data, μ=481σ=41P(X<501)=?
Q: Find the standard error of the sample mean such that we have 60 random samples with mean 25 and…
A: Sample size(n)=60mean=25standard deviation(s)=13
Q: The SAT scores X are normally distributed with mean 146 and standard deviation 43, if 8 SAT scores…
A: Answer: From the given data, Sample size(n) = 8 mean (μ) = 146 Standard deviation(σ) = 43
Q: Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean…
A: The detailed solution is as follows below:
Q: But isn't the mean of the gamma distribution aplha (beta)
A: If alpha is a shape parameter and beta is scale parameter.
Q: The lengths of a particular animal's pregnancies are approximately normally distributed, with mean =…
A:
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- The length of time to discharge a certain Motolite car batteries are normally distributed. It is found that fifteen percent of batteries will last less than thirty hours and ten percent of batteries last more than fifty hours. a) Find the mean of the length of time to discharge the battery. b) Find the standard deviation of the length of time to discharge the battery.Is the number of runs scored by a baseball team during a season quantitative and discrete?An advertising executive wants to estimate the mean amount of time that consumers spend with digital media daily. From past studies, the standard deviation is estimated as 47 minutes What sample size is needed if the executive wants to be 90% confident of being correct to within +7 minutes? n=Round up to the nearest integer.)
- Samples are drawn from a population with mean 144 and standard deviation 43. Each sample has 12 randomly and independently chosen elements. Find the mean, uz, of the distribution of sample means.For a certain type of computers, the length of time between charges of the battery is normally distributed with a mean of 62 hours and a standard deviation of 11 hours. John owns one of these computers and wants to know the number of hours when the computer would have 12% of its battery life left. Sketch the region in question. Write a sentence describing what your answer represents about the problem's specefics.Frequency data are common in applied settings. What is the appropriate statistical procedure for the analysis of frequency data? How is this test performed? List and describe the steps involved in the significance of the test statistic.
- The masses of 250 students are normally distributed with mean 65kg and standard deviation 4kg. Then how many students have masses between 63kg and 73kg.Suppose that the weight of seedless watermelons is normally distributed with mean 6.9kg and standard deviation 1.9kg. Let X be the weight of a randomly selected seedless watermelon. Round to 4 decimal places. What is the median seedless watermelon weight?Suppose that the City of Chicago is interested in potential revenues if they introduce a tolling station near O'Hare. Further suppose that the average time between cars is only 3.0 seconds; what is the average value of the distribution?
- popular standard deviation can be calculated in SPSS by .The time it takes me to wash the dishes is uniformly distributed between 7 minutes and 16 minutes. What is average time that takes me to wash the dishes? What is the standard deviation of the time that takes me to wash the dishes?The reading speed of sixth grade students is approximately normal with a mean speed of 115 word per minutes and a standard deviation of 19 words per minute?a) What is the reading speed of a sixth grader whose reading speed is at the 75th percentile?
