The amount of corn chips dispensed into a 13-ounce bag by the dispensing machine has been identified as possessing a normal distribution with a mean of 13.5 ounces and a standard deviation of 0.3 ounce. Suppose 40 bags of chips were randomly selected from this dispensing machine. Find the probability that the sample mean weight of these 40 bags exceeded 13.6 ounces.
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The amount of corn chips dispensed into a 13-ounce bag by the dispensing machine has been identified as possessing a normal distribution with a mean of 13.5 ounces and a standard deviation of 0.3 ounce. Suppose 40 bags of chips were randomly selected from
The amount of corn chips dispensed into a 12-ounce bag by the dispensing machine has been identified as possessing a normal distrubution with a mean of 12.5 ounces and a standard deviation of 0.2 ounces. What porportion of the 12 ounce bags contain more than the advertised 12 ounces of chips? A)0.9938, B) 0.5662, C) 0.4938, D) 0.0062
Use standard normal and t-Distribution tablesYou are expected to use the Standard Normal and the t-Distribution Tables for all answers on this quiz. You must algebraically calculate the Margin or Error by hand for problems requiring that. Calculator-produced probabilities or confidence intervals will receive minimal credit. 1. (1.5 points) A survey of 177 fatal accidents showed that, in 42 cases, the driver at fault was inadequately insured. Find a point estimate for the population proportion, p, of accidents where the...
The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with mean 1252 and standard deviation 129 chips. (a) What is the probability that a randomly selected bag contains between 1000 and 1500 chocolate chips? (b) What is the probability that a randomly selected bag contains fewer than 1000 chocolate chips? (c) What proportion of bags contains more than 1225 chocolate chips? (a) The probability that a randomly selected bag contains between 1000 and 1500 chocolate chips...
The amount of soda a dispensing machine pours into a 12-ounce can of soda follows a normal distribution with a mean of 12.45 ounces and a standard deviation of 0.30 ounce. Each can holds a maximum of 12.75 ounces of soda. Every can that has more than 12.75 ounces of soda poured into it causes a spill and the can must go through a special cleaning process before it can be sold. What is the probability that a randomly selected can will need to...
The amount of cereal that can be poured into a small bowl varies with a mean of 1.5 ounces and a standard deviation of 0.3 ounce. A large bowl holds a mean of 2.5 ounces with a standard deviation of 0.4 ounce. A student opens a new box of cereal and pours one large and one small bowl. Suppose that the amount of cereal the manufacturer puts in the boxes is a random variable with a mean of 16.2 ounces...
normally distributed) with a mean of 32 ounces and a standard deviation 1. The weights of bags of of 0.36 ounce. Bags in the upper 4.5% are too heavy and must be repackaged, what is the most a bag of baby carrots can weigh and not need to be repackaged? -5 points 2. Som e college students use credit cards to pay for school-related expenses. For this population, the amount paid is normally distributed, with a mean of $1615 and...
solve all 3 and show hand written work 4) A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 450 seconds and a standard deviation of 60 seconds. Between what times do we expect most (approximately 95%) of the boys to run the mile? 5) The amount of corn chips dispensed into a 12-ounce bag...
Chapter 7: Problem 16 Pr (1 point) The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 7.8 ounces and standard deviation 0.15 ounces (a) What is the probability that the average weight of a bar in a Simple Random Sample (SRS) with 3 of these chocolate bars is between 7.66 and 7.91 ounces? ANSWER (b) For a SRS 013 of these chocolate bars, what is the level L such that there...
5.4.1 Question Help A population has a mean = 141 and a standard deviation o = 28. Find the mean and standard deviation of the sampling distribution of sample means with sample size n = 40. The mean is :-), and the standard deviation is 0;=0 (Round to three decimal places as needed.) 5.4.2 Question Help A population has a meanu - 74 and a standard deviation = 8. Find the mean and standard deviation of a sampling distribution of...