10 samples were drawn randomly from a factory for filling glass powder, and each sample contains 5 boxes, the weights (kg) were as follows: Find the qualitative control limits for the arithmetic mean. Find the terms of the specific control of the range Measurements X1 X2 X3 X4 X5 0.98 1.04 1.01 1.02 1 2 0.96 1.02 0.97 1.01 1.02 3 0.99 1.01 1.07 1.03 1 4 1.02 0.98 0.97 0.98 0.98 0.98 0.99 1.03 1.02 1.01 1.04 1.02 0.95 1.02 0.95 1.01 1 0.99 1.02 1.01 8 1 0.99 1.02 1.04 1.09 0.99 1.03 1.04 1.02 0.94 10 1 1.02 0.98 0.99 1.02
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- In a bag of 335 chocolate candies, 34 of them are brown. The candy company claims that 13% of its plain chocolate candies are brown. For the following, assume that the claim of 13% is true, and assume that a sample consists of 335 chocolate candies. a. For the 335 chocolate candies, use the range rule of thumb to identify the limits separating numbers of brown chocolate candies that are significantly low and those that are significantly high. Values of (?)brown candies or fewer are significantly low.In a bag of 330 chocolate candies, 34 of them are brown. The candy company claims that 13% of its plain chocolate candies are brown. For the following, assume that the claim of 13% is true, and assume that a sample consists of 330 chocolate candies. a.For the 330 chocolate candies, use the range rule of thumb to identify the limits separating numbers of brown chocolate candies that are significantly low and those that are significantly high. Values of ? brown candies or fewer are significantly low.It is believed that the percent of female STEM majors at a particular college Is 29%. a)Say we select 15 random females from this college. Is this sample “large enough” to use the Central Limit Theorem for proportions? Use the conditions
- When using the central limit theorem for means with n = 57, it is not necessary to assume the distribution of the population data is normally distributed. True FalseJanice Sanders, CEO of Pine Crest Medical Clinic, isconcerned over the number of times patients must waitmore than 30 minutes beyond their scheduled appointments.She asked her assistant to take random samples of 70 patientsto see how many in each sample had to wait more than30 minutes. Each instance is considered a defect in the clinicprocess. The table below contains the data for 15 samples. a. Assuming Janice Sanders is willing to use three-sigmacontrol limits, construct a p-chart.b. Based on your p-chart and the data in the table, what canyou conclude about the waiting time of the patients?A research center claims that 26% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1000 adults in that country, 29% say that they would travel into space on a commercial flight if they could afford it. At α=0.05, is there enough evidence to reject the research center's claim? Complete parts (a) through (d) below. (a) Identify the claim and state H0 and Ha. "Recall that the claim is the percentage of adults in the country would travel into space on a commercial flight if they could afford it. Let a success be an adult in the country who would travel into space on a commercial flight if they could afford it. Translate the claim made about the population parameter from a verbal statement to a mathematical statement." (b) Use technology to find the P-value. (c) Decide whether to reject or fail to reject the null hypothesis and (d) interpret the decision in the context of the original claim.
- Classify the following statements as to whether they belong to the area ofdescriptive statistics or inferential statistics___________________ 1. At most 5% of SLU students are smokers.___________________ 2. Assuming that less than 20% of the Kalinga coffee beans weredestroyed by a typhoon these past months, we should expect anincrease of no more than P30 for a kilogram of coffee by the endof the year. ___________________ 3. An employee generalized that the average monthly salary of a regular employee in a certain company is P12,000. ___________________ 4. A study found out that all customers who have received a giftcertificate from a store 75% went back to the store to shop.___________________ 5. The average grade in statistics of 50 students is 83.60.The ______ is sensitive to outliers, making this test not a good choice if there are any. A. N-way ANOVA B. ANOVA C. MANOVA D. Kruskal-Wallis H-testThe Central Limit Theorem is important in statistics because for any population, it says the sampling distribution of the sample mean is approximately normal, regardless of the sample size. for a large n, it says the sampling distribution of the sample mean is approximately normal, regardless of the shape of the population. for any sized sample, it says the sampling distribution of the sample mean is approximately normal. for a large n, it says the population is approximately normal.
- A research worker wants to determine the mean time it takes a mechanic to rotate the tires ofa car, and she wants to be able to assert with 95% confidence that the average of her sample isoff by at most 0.50 minutes. If she can presume from past experience that σ2 = 2:56 minutes,how large a sample will she have to take?Consider the case where the predetermined average number of bus arrivals at the Cubao Station is 6 per 15-minute period. Find the pro of at least 4 buses arriving in a 15-minute period.To investigate a possible relation between gender and handedness, a random sample of 320 adults was taken with the following results: Men Women Sample Size, n 168 152 Number of left-handed, x 24 9 a) Draw and state the rejection region in interval notation. b) State the test statistic and decision. c) Interpret your results.