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One of the significant features of camera is battery life as measured by number of shots taken until battery needs to be recharged. Data at left contain battery life of 31 subcompact cameras and 15 compact cameras. Suppose that population variances from both kinds of digital cameras are equal, is there evidence of difference in mean battery life between two kinds of digital cameras at 0.05 level of significance.
Compute the value of t. What is your decision regarding the null hypothesis?
Design a Huffman source coding scheme that can achieve lossless transmission with lessthan 90 bit/second.
Suppose that the lives of all such bulbs have a normal distribution with a mean of 750 hours and a standard deviation of 55 hours. Let x (sample mean) be the mean life of range sample of 25 such bulbs.
The choices are to be designated by the letter a, b, c, d, and e. The professor wishes to use a random-number table to determine which letter choice should correspond to the correct answer for a question. Using the number correspondence 1 for a, 2 fo..
Dunn Poitiac has compiled the following sales data regarding the number of cars sold over the past 60n selling days. Answer the following questions for the sales data shown.
If the weight distribution is known to be normally distributed, do the data support the veterinarian's suspicion? Conduct a hypothesis test at the 5% significance level. Define your parameter (μ), state your hypotheses, conduct the test and write ..
Recognize and explain potential threats (up to 3) to external validity.
If np ≥ 5 and nq ≥ 5, estimate P (more than 5) with n=14 and p=0.3 by using the normal distribution as an approximation to the binomial distribution; if np
What is the approximate probability that the combined weight of 25 items exceeds 445 ounces? What theorem is useful in answering this question?
The researcher computes the sum of squares for groups as SSG = 40030 and the sum of squares for error as SSE = 414780. The numerical value of the ANOVA F statistic is
What is the theoretical probability that Mr. Nerdly assigns 10 homework problems as a result of a randomly selected student playing the birthday game?
Find Probability of independent events.Consider again the auto repair rates described. If you own two cars, what is the probability that.
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