The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0°Cat the freezing point of water. Tests on a large sample of these thermometers reveal that at the freezing point of water, some give readings below 0°C (denoted by negative numbers) and some give readings above 0°C (denoted by positive numbers). Assume that the mean reading is 0°C and the standard deviation of the readings is 1.00°C Also assume that the frequency distribution of errors closely resembles the normal distribution. A thermometer is randomly selected and tested. Find the temperature reading corresponding to the given information. 4) If 9% of the thermometers are rejected because they have readings that are too low, but all other thermometers are acceptable, find the temperature that separates the rejected thermometers from the others. A) -1.450 D) -1.26 B) -1.34° C) -1.39°

Q: A reporter estimates that professional golfers have an average height of 70.1 inches, with a…

A: Given that a reporter estimates that professional golfers have an average height of 70.1 inches,…

Q: Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2600 grams and…

A: The z score indicates how many standard deviations that data points away from the mean. It can be…

Q: In measuring ignition duration, an engineer estimates that the standard deviation is 0.05 seconds.…

A: We have given that  Standard deviation = 0.05  Margin of error =E=0.01 95% confidence interval.

Q: According to a soda company, a 12oz. bottle of their soda contains an average of 39 grams with a…

A: The mean 39 and standard deviation 15. It is required to find the value below which there are…

Q: LOUIS VUITTON Company is trying to decide whether to open a store at Bagdat street in Istanbul.…

A: From the given information, the claim of the problem is the mean monthly family income is above…

Q: Tires of a particular brand have a lifetime mean of 29,000 miles and a standard deviation of 3,000…

A: Chebyshev's theorem and empirical rule are used to calculate the percentages of data lies within…

Q: A small business owner estimates his mean daily profit as $968 with a standard deviation of $130.…

A: Given data, Mean μ=968sd     σ=130n=102The Mean annual profit isμ=102*968=98736The sd of annual…

Q: A supplier contract calls for a key dimension of a part to be between 1.96 and 2.04 centimeters. The…

A: Given, population mean = 1.98 cm population standard deviation = 0.03 cm which is normally…

Q: Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2600 grams and…

A: Obtain the standard z-score for the baby born in week 33 weighs 2200 grams. The standard z-score for…

Q: The Smith Trucking Company claims that the average weight of its delivery trucks when fully loaded…

A: Given,mean(μ)=6000standard deviation(σ)=120sample size(n)=36α=1-0.90=0.1α2=0.05Z0.05=1.645…

Q: a statistian employed by a consumer testing organization reports that at 99% confidence he has…

A: Given, Sample mean =  12 Critical z value at 99% confidence = 2.576 Sample standard deviation = 2

Q: A researcher claims that the average wind speed in a certain city is 8 miles per hour. A sample of…

A: One sample z-test uses to check the significance difference between sample mean and population mean.…

Q: Suppose babies born after a gestation period of 32 to 35 weeks have the mean weight of 2800 grams…

A: To determine which baby weights are more relative to the gestation period, for that it is needed to…

Q: The mean age of a sample of 25 people who were playing the slot machines is 48.7 years, and the…

A: n1=25 , x¯1=48.7, s1=6.8n2=35 , x¯2=55.3, s2=3.2

Q: Suppose that the hemoglobin levels among healthy females are normally distributed with a mean of…

A: Solution

Q: An improved filling machine will always be less incosistent, in the amount in each box is still…

A: Z-score:Z-scores are a used to compare results from a normal population. The formula for z-score is,

Q: A normal distribution has a mean of 0.40 and standard deviation of 0.028. According to the Empirical…

A: We have given that,  X is random variable are normally distributed with mean (mu) = 0.40 and…

Q: A machine for filling cereal boxes has a standard deviation of 1 ounce of fill per box. What setting…

A: From the provided information, Standard deviation (σ) = 1 ounce X~N (µ, 1) Here X be a random…

Q: In the past, a chemical company produced 880 pounds of a certain type of plastic per day.  Now,…

A: State the hypotheses.

Q: Suppose that the hemoglobin levels among healthy females are normally distributed with a mean of…

A: From the provided information, Mean (µ) = 14.2 Let X be a random variable which represents the…

Q: The mean number of hours for persons watching a tv show was 2.98 hours each day with a standard…

A: Given : Claim : The population standard deviation of tv watching time for teenagers is less than…

Q: At α= 0.10, test the claim that the standard deviation is less or equal to 1.2 minutes. Use the P-…

A: It is given that Sample size n = 15 Sample SD s = 1.8 Level of significance = 0.10

Q: Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 3000 grams and…

A:

Q: A manufacturer claims that the mean lifetime, u, of its light bulbs is 45 months. The standard…

A: The null hypothesis is,   The alternative hypothesis is, Significance level, α=0.01 The type of…

Q: The owner of a fish market determined that the average weight for a catfish is 3.2 pounds with a…

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Q: Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2900 grams and…

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A: Given that  Mean = M = 98.16 Standard deviation = SD = 0.65 X ~ Normal ( M = 98.16 , SD = 0.65 )

Q: The Precision Scientific Instrument Company manufactures thermometers that are supposed to give…

A:

Q: The life of a semiconductor laser at a constant power is normally distributed with a mean of 7,994…

A: X=Life of semiconductor laser at a constant power Mean μ=7994 hours Standard deviation σ=594 hours…

Q: Suppose that the creatine kinase levels among healthy males are normally distributed with a standard…

A: From provided information, creatine kinase levels among healthy males are normally distributed with…

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Q: Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2500 grams and…

A:

Q: A lab technician is tested for her consistency by making multiple measurements of the cholesterol…

A: Solution: Given information: n=12 Sample size  σ= 1.2 mg/dL  Population standard deviation  s= 1.5…

Q: In a medical examination ,300 people undergo a height measurement and was found out that the average…

A: From the provided information, Population (N) = 300 Average height (µ) = 150 Standard deviation (σ)…

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A:

Q: A manufacturer of bolts has a​ quality-control policy that requires it to destroy any bolts that are…

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Q: The precision scientific instrument company manufactures thermometers that are supposed to give…

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Q: find the corresponding​ z-scores. Which baby weighs less relative to the gestation​ period?

A: Given: The mean weight and standard deviation of babies born after gestation period of 32-35 weeks…

Q: It has been hypothesized that the standard deviation of the germination time of radish seeds is…

A: Solution: From the given information, the hypothesized standard deviation is 8 days. The…

Q: Suppose that the creatine kinase levels among healthy males are normally distributed with a standard…

A: From the provided information, Standard deviation (σ) = 22 Let mean creatine kinase level in healthy…

Q: Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2800 grams and…

A: formula for z-score is

Q: Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2900 grams and…

A: The mean and standard deviation for 32 to 35 weeks of gestation period are 2900 and 900,…

Q: A researcher claims that the average wind speed in a certain city is 7 miles per hour. a sample of…

A: Hypothesis,  Ho: There is enough evidence to reject the claim that the average wind speed in a…

Q: The body temperatures of a group of healthy adults have a​ bell-shaped distribution with a mean of…

A: Let X denote the  body temperatures of a group of healthy adults have a​ bell-shaped distribution…

Q: If the standard deviation of the whole national accounting examination is 30 for this year, how…

A: Solution: From the given information, confidence level is 0.99, σ=0.30 and E=5.

Q: A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is…

A:

Q: A researcher claims that 20 years old women on a special diet will have an average weight of 110…

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Q: The mean number of hours for persons watching a tv show was 2.98 hours each day with a standard…

A:

Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.