يقوم الانتقال إلى سؤال آخر بحلظ هذا الرد. K30 9 J > 1 درجات When estimating the population mean with a small sample, the t distribution may be used with how many degrees of freedom. n+1 n-2 O n-1 يقوم الانتقال إلى سؤال آخر بحفظ هذا الرد. K30 9 J >

يقوم الانتقال إلى سؤال آخر بحلظ هذا الرد. K30 9 J > 1 درجات When estimating the population mean with a small sample, the t distribution may be used with how many degrees of freedom. n+1 n-2 O n-1 يقوم الانتقال إلى سؤال آخر بحفظ هذا الرد. K30 9 J >

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Please show all solutions and all steps. All final answers must be round up to four decimal places. Identify the mean, variance, and standard deviation of the following tables then compute for the percentage of what is being asked. REMINDER! Round up only your final answers and Z-scores. Note: Z- scores are rounded up to 2 decimal places. These are the grades of randomly selected graduating students 61-65 66-70 71-75 76-80 81-85 86-90 91-95 96-100 2 3 11 12 18 27 16 11 a. what is the probability of a randomly selected student have a grade of at least 84 percent? b. what is the probability that a randomly selected student's grade is between 90 and 100 percent?
We are 95% confident that the population mean lies between 43.8 and 46.2, then اختر احدى الدجابات the sample mean is 45. We can't conclude any thing about mean in general . the population mean is 45.
Use the standard normal distribution to compare two other normal distributions. 25. Blood pressure is described by two numbers: systolic pressure and diastolic pressure (measured in mmHg, or millimeters of mercury). For example, a blood pressure of 120/80 denotes a systolic pressure of 120 mmHg and a diastolic pressure of 80 mmHg. A study of 625 persons ages 26 to 45 finds that their blood pressures are normally distributed. Their systolic pressure had a mean of 122 and a standard deviation of 14, and their diastolic pressure had a mean of 83 and a standard deviation of 9. Two study participants are randomly selected and their blood pressures are measured again. The first participant had a systolic reading of 99 mmHg, while the second had a diastolic reading of 70 mmHg. Which participant had the lower reading with regard to the study population? 26. Health experts often consider blood pressure to be elevated if systolic pressure is 140 or greater or the diastolic pressure is 90 or…
Total blood volume (in ml) per body weight (in kg) is important in medical research. For healthy adults, the red blood cell volume mean is about ? = 28 ml/kg.† Red blood cell volume that is too low or too high can indicate a medical problem. Suppose that Roger has had seven blood tests, and the red blood cell volumes were as follows. 32 25 42 34 32 39 31 I need help with sketching the distribution (d) and (e)
It is commonly believed that the mean body temperature of a healthy adult is 98.6∘F98.6∘F. You are not entirely convinced. You believe that it is not 98.6∘F98.6∘F. You collected data using 36 healthy people and found that they had a mean body temperature of 98.21∘F98.21∘F with a standard deviaiton of 1.18∘F1.18∘F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6∘F98.6∘F.a) Identify the null and alternative hypotheses?H0H0: ? p = p ≠ p < p > p ≤ p ≥ μ = μ ≠ μ < μ > μ ≤ μ ≥ H1H1: ? p = p ≠ p < p > p ≤ p ≥ μ = μ ≠ μ < μ > μ ≤ μ ≥ b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? left-tailed right-tailed two-tailed c) Identify the appropriate significance level.d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places.e) Calculate your p-value. Write the result below, and be sure to round your final answer…
pls help me and write the solution down on a paper if you can thank you
just the multiple choice part
As the sample size increases, the margin of error Group of answer choices decreases increases stays the same increases or decreases depending on the size of the mean
For the residents in 2014, use R to calculate the interval with 99% certainty that the interval contains the actual population mean of the residents by census tracts. Type in the interval with keyboard. We also know that in each year, the number of residents by census tract in the State of Maryland follows a normal distribution, and the variance in the number of residents within the State of Maryland is the same for different years. POP2014: 3072, 1989, 3794, 2689, 3211, 3722, 4385, 4009, 7598, 3862, 3097, 2726, 4881, 4157, 2570, 2512, 2518, 4863, 4147, 7139, 6067, 6819, 3705, 3239, 3824, 4977, 2576, 2940, 9791, 5231, 5634, 5337, 4205, 3888, 5562, 3335, 3770, 1808, 2045, 1532, 5420, 4993, 6109, 4377, 5424, 4976, 4507, 3738, 2827, 3485, 1559, 5199, 4702, 3971, 3803, 3356, 4670, 3816, 5477, 4760, 3126, 3630, 3755, 3795, 2578, 3382, 4005, 2442, 6096, 3799, 3843, 3836, 6046, 6431, 3561, 3142, 4829, 5058, 2471, 6119, 3523, 3094, 3146, 3356, 2618, 2366, 4266, 4016, 6080, 1554, 6878, 3645,…
The symbol σˆpσp^ represents the proportion of a sample of size n. True False
Consider a sample of pennies. Their weights are measured and found to have a variance of 2.69. Give a point estimate for the population variance in weights of pennies. Round your answer to two decimal places, if necessary. Answer How to enter your now window)