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We have access to the complete dataset of all ages (in years) at death for First Ladies of the U.S. who have passed. From this data set we know that the average age at death is 71.7 years. You are interested in how the sample statistics vary for different samples of size n=15 from this population. A sampling distribution is constructed where one of the samples is used to create a bootstrap distribution. This sample has mean: x-bar = 78 years. Below are boxplots of the sample of size n = 15, the sampling distribution, and the bootstrap distribution (although not necessarily in that order!). Use all of the provided information to select the correct reason for each Boxplot identification. Boxplot A is the bootstrap distribution because it is centered at the [answer3] and has an estimated standard error that is roughly equal to the standard error found with the [answer4]. Boxplot B is the sample of n = 15 because it is centered at the [answer5] where the sample standard deviation (s) is [answer6] the value of the standard error found with the sampling distribution.  Boxplot C is the sampling distribution because it is centered at the [answer1] and has a standard error that is roughly equal to the estimated standard error found with the [answer2].

What is the mass in grams of MgCI₂ that can be produced from [x]0 moles of Cl₂ gas reacting with excess magnesium? Mg(s) + Cl₂(g) → MgCI₂(s)

A medical laboratory test is run using a [x] µL blood sample. What is this volume in milliliters? Show your work using dimensional analysis.

What would be the charge on an atom of lead which only has 78 electrons?  [sign][magnitude]

There are three isotopes of an element with the following percent abundances; 20X = 19.992 amu (90.51%), 21X = 20.993 amu (0.27%), 22X = 21.991 amu. What is the average atomic mass in amu of X? Show your work and give your answer to 2 decimal places.

The fictional element Chaffium (symbol Ch) makes two oxyanions: ChO3¯ and ChO4¯ What would be the name of ChO4¯? Explain your reasoning. Note: The fictional element name is a Latin word that ends with -ium like many real elements. Just use the same rules as you would with a real element name.

Determine the mass in grams of [x].65 × 10²¹ atoms of barium.

For the reaction CaCO3(s) + 2 HCl(aq) →  CaCl2(aq) + CO2(g) + H2O(l) If 78.1 g solid CaCO3 is mixed with 51.6 g HCl. Which one will be the limiting reactant? Show your work and explain your reasoning.

For the reaction 2 S (s) + 3 O2(g) → 2 SO3(g) If 6.3 g of S is reacted with 10.0 g of O2. Which one will be the limiting reactant? Show your work and explain your reasoning.

What is the correct order of blood to the left upper limb?